<script data-pm-proxy="intercept"></script><?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0" xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd" xmlns:googleplay="http://www.google.com/schemas/play-podcasts/1.0"><channel><title><![CDATA[Stay Young*]]></title><description><![CDATA[Build muscle, burn belly fat, stay young after 50—with the protein-timing system that works for aging bodies. Science-based nutrition, zero crazy diets]]></description><link>https://stayyoung.substack.com</link><image><url>https://substackcdn.com/image/fetch/$s_!pkRq!,w_256,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F9e1d7a5b-7881-43ce-94be-7cde1c0c7463_1280x1280.png</url><title>Stay Young*</title><link>https://stayyoung.substack.com</link></image><generator>Substack</generator><lastBuildDate>Fri, 04 Sep 2026 21:53:50 GMT</lastBuildDate><atom:link href="/__u/stayyoung.substack.com/feed" rel="self" type="application/rss+xml"/><copyright><![CDATA[Stay Young]]></copyright><language><![CDATA[en]]></language><webMaster><![CDATA[stayyoung@substack.com]]></webMaster><itunes:owner><itunes:email><![CDATA[stayyoung@substack.com]]></itunes:email><itunes:name><![CDATA[Stay Young]]></itunes:name></itunes:owner><itunes:author><![CDATA[Stay Young]]></itunes:author><googleplay:owner><![CDATA[stayyoung@substack.com]]></googleplay:owner><googleplay:email><![CDATA[stayyoung@substack.com]]></googleplay:email><googleplay:author><![CDATA[Stay Young]]></googleplay:author><itunes:block><![CDATA[Yes]]></itunes:block><item><title><![CDATA[Black seed oil does one real thing. Here's the 3-question test for the other thirty-nine]]></title><description><![CDATA[A remedy that fixes everything fixes nothing, and the length of the promise is the giveaway.]]></description><link>https://stayyoung.substack.com/p/black-seed-oil-does-one-real-thing</link><guid isPermaLink="false">https://stayyoung.substack.com/p/black-seed-oil-does-one-real-thing</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Wed, 02 Sep 2026 17:58:05 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!ZJpW!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F46e45626-c2ce-4f5c-9e9a-13476bb1bd20_900x342.jpeg" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>A remedy that fixes everything fixes nothing, and the length of the promise is the giveaway.</p><p>Black seed oil is having its moment again. The claim making the rounds is that it reverses chronic disease, regrows hair, and handles cancer, Alzheimer&#8217;s, asthma, diabetes and your liver, with a hadith attached calling it a cure for every illness but death. Cleopatra drank it. Nefertiti wore it. Three thousand years of use.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!ZJpW!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F46e45626-c2ce-4f5c-9e9a-13476bb1bd20_900x342.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!ZJpW!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F46e45626-c2ce-4f5c-9e9a-13476bb1bd20_900x342.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!ZJpW!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F46e45626-c2ce-4f5c-9e9a-13476bb1bd20_900x342.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!ZJpW!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F46e45626-c2ce-4f5c-9e9a-13476bb1bd20_900x342.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!ZJpW!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F46e45626-c2ce-4f5c-9e9a-13476bb1bd20_900x342.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!ZJpW!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F46e45626-c2ce-4f5c-9e9a-13476bb1bd20_900x342.jpeg" width="900" height="342" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F46e45626-c2ce-4f5c-9e9a-13476bb1bd20_900x342.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!ZJpW!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F46e45626-c2ce-4f5c-9e9a-13476bb1bd20_900x342.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!ZJpW!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F46e45626-c2ce-4f5c-9e9a-13476bb1bd20_900x342.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!ZJpW!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F46e45626-c2ce-4f5c-9e9a-13476bb1bd20_900x342.jpeg 1456w" sizes="100vw" fetchpriority="high"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Here&#8217;s what almost nobody who shares that post knows. The oil has real human research behind it. Not folklore. Actual randomized trials, replicated, pooled into meta-analyses. That&#8217;s rarer than it sounds for a wellness remedy, and it makes this one worth a proper look instead of an eye-roll.</p><p>The research also does something the thread can&#8217;t survive. It says what black seed actually does, and the honest answer is small, specific, and nothing like &#8220;cures everything.&#8221;</p><p><strong>The one finding that keeps showing up</strong></p><p>A 2025 systematic review in Complementary Therapies in Medicine pooled 16 randomized controlled trials of black seed in people with type 2 diabetes. It measured blood sugar markers, cholesterol, weight, liver enzymes, kidney function.</p><p>The result was narrow and consistent. Black seed lowered fasting blood glucose by about 21 mg/dL and dropped HbA1c, the three-month blood sugar average, by roughly 0.44 points. It also nudged total and LDL cholesterol down.</p><p>Source: &#8220;Effects of black seed on cardiometabolic indices in type 2 diabetic patients,&#8221; a meta-analysis of 16 RCTs, Complementary Therapies in Medicine, 2025.</p><p>That&#8217;s a real effect. It has been found more than once, in more than one lab, which is the bar most supplements never clear.</p><p>Now read the same paper for what it didn&#8217;t find. No significant effect on insulin, on triglycerides, on liver enzymes, on kidney function, or on body weight. The review that proves black seed does something also proves it doesn&#8217;t do most of what the thread sells.</p><p><strong>Who was actually in the room</strong></p><p>Every trial with a real result was run in people with type 2 diabetes or metabolic problems.</p><p>That matters more than any single number. A drug that lowers high blood sugar in a diabetic body does not mean much for a body whose blood sugar is already normal. You cannot lower a number that isn&#8217;t raised. The effect the research found lives in a specific population, and if you&#8217;re a 58-year-old with normal glucose taking this oil to &#8220;reverse aging,&#8221; you are the one group the studies never showed a benefit for.</p><p>The thread does the classic move. It takes a modest finding in sick people and sells it to everyone as a fountain of youth. The evidence was collected in a diabetic body. The promise was mailed to yours.</p><p><strong>Where the &#8220;cures cancer and Alzheimer&#8217;s&#8221; claims come from</strong></p><p>Thymoquinone is the compound doing the real work, and it&#8217;s genuinely interesting.</p><p>The Alzheimer&#8217;s and cancer claims trace back to it. Here&#8217;s the part the thread leaves out: those results are cells in a dish and animals in a lab. Thymoquinone kills certain cancer cells on a plate. It calms brain inflammation in a rodent. That&#8217;s where the &#8220;anti-cancer, anti-Alzheimer&#8217;s&#8221; list comes from, and it is a very long way from a human being.</p><p>You&#8217;ve seen this pattern in this newsletter before, because it never changes. A compound does something dramatic to a mouse or a petri dish, and a thread quietly relabels the mouse as you. The gap between a cancer cell dying on a plate and a person not getting cancer is most of medicine. It is not a detail you skip with an ancient quote.</p><p><strong>What nobody knows, including me</strong></p><p>Three honest gaps.</p><p>Nobody has shown black seed does a single thing for a healthy person over 50 with normal bloodwork. The trials were in sick bodies. Whether it helps a well one has not been tested, and &#8220;it lowered high blood sugar in diabetics&#8221; tells you nothing about a body that isn&#8217;t diabetic.</p><p>Supplement research has a quiet problem I have to name. Trials with a positive result get published and shared. Trials that found nothing often never see daylight, and a lot of the black seed research comes from a small number of regions and labs. The effect is probably real. It may also be flattered by which studies made it into print.</p><p>And mine. I find the &#8220;ancient remedy, modern science catches up&#8221; story genuinely appealing, and that&#8217;s the reason I read it twice. It&#8217;s a good story. Good stories are the ones I check hardest, because the pleasure of believing them does the work the evidence should be doing. The blood sugar finding survived my checking. The rest did not.</p><p>Certainty is what the supplement industry sells. So is a 3,000-year-old testimonial.</p><p><strong>The strongest case for the oil</strong></p><p>Let me argue the other side properly, because it deserves it.</p><p>This is not homeopathy. Black seed has more replicated human data than most things on the supplement shelf, the blood sugar effect is real and has held up across separate meta-analyses, and thymoquinone is a legitimate molecule that serious researchers study. Whole black seed is food. People have eaten it for millennia with low toxicity. If you have type 2 diabetes and you add it alongside your actual treatment, the evidence says it might shave a little off your numbers, and that&#8217;s not nothing.</p><p>Concede all of that. As a food, with modest evidence, in the right person, it earns a place.</p><p>The claim still collapses. Because &#8220;might lower HbA1c by 0.44 in a diabetic&#8221; and &#8220;cures anything but death&#8221; are not the same sentence, and the second one is doing something the first never could. It&#8217;s telling a healthy person to swap a doctor for an oil. Somebody with a real condition will read &#8220;reverses chronic disease&#8221; and quietly deprioritize the treatment that&#8217;s keeping them alive. The oil is harmless. The sentence around it is not.</p><p><strong>The tell you can use on any post like this</strong></p><p>I used to share things like this. An ancient remedy, a compound with a hard-to-pronounce name, a list of everything it fixes. It felt like sharing a secret.</p><p>What I stopped noticing was the length of the list. Forty benefits is not a strength of the claim. It&#8217;s the disproof. Nothing in biology does forty unrelated things, because the body isn&#8217;t one system, and a molecule that lowered blood sugar and cured cancer and regrew hair and prevented dementia would be the most important discovery in the history of medicine, not a thread with a painting of Nefertiti attached. The longer the list of cures, the smaller the real effect underneath it. That inverse is close to a law.</p><p>Three things you can do this week, none of which requires buying anything.</p><p>&#8594; Count the claims before you count the evidence. If a remedy is sold as fixing more than three unrelated things, treat the whole post as marketing until a named study proves otherwise. The list length is the first filter.</p><p>&#8594; Ask who the study was run on. A benefit found in sick people rarely transfers to a well one. If you don&#8217;t have the condition the trial treated, the result probably isn&#8217;t yours.</p><p>&#8594; If you have type 2 diabetes and you&#8217;re curious, raise it with your doctor before your next HbA1c. Not as a replacement for anything. As a question, with a blood test on either side of it, so you&#8217;re measuring instead of hoping.</p><p>That&#8217;s the free version. It&#8217;s enough to stop you wasting money.</p><p>What it doesn&#8217;t give you is the part that decides whether a supplement is worth it for your body specifically: the exact three-question test I run on any remedy before spending a cent, the honest read on dose and form if you do have a reason to try black seed, and the short list of what actually moves the markers this oil is reaching for, most of which costs less than the oil.</p><p>the three-question test for any supplement claim, the honest dose and form if you have a real reason to try black seed, and the short list of what actually moves blood sugar and cholesterol for a body over 50, most of it cheaper than the oil.</p><p><strong>The three-question supplement test, and what to do instead</strong></p><p>Run this before you spend money on any remedy, black seed or otherwise. Then, underneath it, the levers that move the numbers this oil is chasing.</p><p><strong>THE TEST &#8212; three questions, ten seconds</strong></p><p><strong>Question 1 &#8212; How many things does it claim to fix?</strong><br>More than three unrelated conditions, put it down until a study says otherwise. A real compound has a narrow effect. Black seed passes on blood sugar. It fails on the other thirty-nine.</p><p><strong>Question 2 &#8212; Who was in the trial?</strong><br>If the evidence is a petri dish, a mouse, or people with a condition you don&#8217;t have, the result isn&#8217;t yours. Black seed worked in diabetics. That&#8217;s the only human group it&#8217;s shown for.</p><p><strong>Question 3 &#8212; Is the finding a marker or a miracle?</strong><br>&#8220;Lowered HbA1c by 0.44&#8221; is a marker, modest and real. &#8220;Reverses chronic disease&#8221; is a miracle, and nobody has one. When a post has miracles and no markers, the markers are missing because they&#8217;d be too small to sell.</p><p><strong>IF YOU HAVE TYPE 2 DIABETES AND WANT TO TRY IT</strong></p><p>This is an add-on to your real treatment, never a swap, and it&#8217;s a conversation with your doctor first, because it can lower blood sugar and that interacts with medication that also lowers it.</p><p>&#8594; The trials used roughly 1 to 3 grams a day of black seed, most often as an oil capsule or ground seed<br>&#8594; The blood sugar effect showed up above about 1 gram a day, and within 8 weeks in most trials<br>&#8594; Measure it. Get an HbA1c before you start and after 12 weeks. That single before-and-after tells you more than any thread, because it&#8217;s your body instead of a stranger&#8217;s<br>&#8594; Whole ground seed is food and cheap. You do not need a premium branded oil to get the compound the studies used</p><p><strong>WHAT ACTUALLY MOVES THESE NUMBERS</strong></p><p>Black seed reaches for blood sugar and cholesterol. Here&#8217;s what moves them harder, for less.</p><p>&#8594; A 10 to 15 minute walk after your largest meal. This lowers the post-meal glucose spike more reliably than any supplement, and it costs nothing<br>&#8594; Protein and fibre before the carbs at each meal. Same plate, different order, meaningfully lower glucose rise. Free<br>&#8594; Enough protein to hold muscle, because muscle is where blood sugar goes. Roughly 1.2 to 1.5g per kg of bodyweight for a body over 50. More muscle, better glucose control, no capsule involved. (Kidney disease changes this number. Ask your doctor.)<br>&#8594; Oily fish twice a week for the cholesterol side. Real food, real evidence, cheaper than the oil</p><p>If you do all four and add black seed, the oil is the smallest lever in the room. If you do none of them and only take the oil, you&#8217;ve bought the weakest tool and skipped the strong ones.</p><p><strong>What to expect</strong></p><p>&#8594; Weeks 1 to 2: if you added the post-meal walks, steadier energy. That&#8217;s the walk, not the oil<br>&#8594; Week 12: re-test HbA1c. Now you know if anything worked, because you measured it<br>&#8594; Ongoing: the food and the walking keep paying whether or not the oil did anything. That&#8217;s the difference between a habit and a purchase</p><p>The oil might trim a little off a high number in a body that already has a problem.</p><p>It will not fix forty things, because nothing does, and the day someone tries to sell you a cure for everything is the day to keep your hand on your wallet and your questions ready for a real doctor.</p><p>One honest limit on all of this.</p><p>Everything above is a good general answer. It can&#8217;t see your blood sugar, your cholesterol, or which of these levers is the one that matters for you. A newsletter never can, and neither can a supplement.</p><p>That&#8217;s the whole point of the article. The oil sold you forty fixes without knowing a single one of your numbers. We do the opposite. You send your blood test, we read it, and Dylan builds the plan around the markers that are actually driving your belly fat, your energy crashes, and your blood sugar &#8212; then he coaches you through it and tracks it month to month.</p><p>Not a miracle oil. Your numbers, read by a person.</p><p>Tell us the one thing you most want sorted, and we&#8217;ll tell you honestly if we can help. <a href="https://tally.so/r/MejPd0">Start here.</a></p>]]></content:encoded></item><item><title><![CDATA[Your pill isn't a trap. It might be a leftover.]]></title><description><![CDATA[Your medication isn&#8217;t a trap.]]></description><link>https://stayyoung.substack.com/p/your-pill-isnt-a-trap-it-might-be</link><guid isPermaLink="false">https://stayyoung.substack.com/p/your-pill-isnt-a-trap-it-might-be</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Tue, 01 Sep 2026 10:12:08 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!YH39!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5e71614f-3088-4e02-b67e-f012a62013b8_900x394.jpeg" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>Your medication isn&#8217;t a trap. One of them might be a leftover.</p><p>A hepatitis C treatment cured more than nine in ten patients. Its US sales went from $12.5 billion in 2015 to under $4 billion three years later.</p><p>Then a Goldman Sachs analyst wrote the sentence the whole thread is built on.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!YH39!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5e71614f-3088-4e02-b67e-f012a62013b8_900x394.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!YH39!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5e71614f-3088-4e02-b67e-f012a62013b8_900x394.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!YH39!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5e71614f-3088-4e02-b67e-f012a62013b8_900x394.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!YH39!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5e71614f-3088-4e02-b67e-f012a62013b8_900x394.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!YH39!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5e71614f-3088-4e02-b67e-f012a62013b8_900x394.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!YH39!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5e71614f-3088-4e02-b67e-f012a62013b8_900x394.jpeg" width="900" height="394" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5e71614f-3088-4e02-b67e-f012a62013b8_900x394.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!YH39!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5e71614f-3088-4e02-b67e-f012a62013b8_900x394.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!YH39!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5e71614f-3088-4e02-b67e-f012a62013b8_900x394.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!YH39!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5e71614f-3088-4e02-b67e-f012a62013b8_900x394.jpeg 1456w" sizes="100vw" fetchpriority="high"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>On the tenth of April 2018, in a report called &#8220;The Genome Revolution,&#8221; analyst Salveen Richter asked biotech clients a question in writing: is curing patients a sustainable business model? The note answered itself. Gilead had, in its own words, &#8220;exhausted the available pool of treatable patients.&#8221; Cure people, and they stop being customers.</p><p>Source: Richter, Goldman Sachs, &#8220;The Genome Revolution,&#8221; April 10, 2018, as reported by CNBC.</p><p>That&#8217;s real. It&#8217;s verifiable. It went out to paying clients as ordinary arithmetic, and it&#8217;s a genuinely uncomfortable thing to have in writing.</p><p>And it is being used, right now, to talk people your age out of medication that is keeping them alive.</p><p>Both of those are true at once. Holding them together is the entire job of this post.</p><p><strong>The line the thread crosses, and why it matters more than the argument</strong></p><p>The thread lists insulin as &#8220;not a cure.&#8221; Injected daily, for life.</p><p>Stop there, because this is where a good argument turns dangerous.</p><p>Insulin isn&#8217;t managing a lifestyle disease. It&#8217;s replacing a hormone the body physically cannot make. A type 1 diabetic&#8217;s pancreas does not produce insulin &#8212; not &#8220;produces less,&#8221; not &#8220;could produce more with better habits.&#8221; Cannot. Take insulin away and that person dies, in days, and no amount of food or sunlight or citrus changes it.</p><p>The same is true of levothyroxine for someone with no working thyroid. The thread&#8217;s own author admits this in his replies &#8212; &#8220;no thyroid is a completely different category, replacement of a hormone the body can no longer make, not managing a lifestyle-driven disease.&#8221; He knew the original line was too broad. He put the correction in the small print.</p><p>So here&#8217;s the first hard rule, and it&#8217;s not paywalled, because safety never is: replacement therapy is not the villain. Insulin, thyroid hormone, and hormone replacement give a body back something it can no longer produce. A drug that replaces what your body has stopped making is not a subscription trap. It&#8217;s a prosthetic. Nobody should read this post, or that thread, and question those. Ever.</p><p>And nothing here is a reason to stop, reduce, or skip any medication. Not one. Every question this post raises is a question for the doctor who prescribed the drug &#8212; never a decision you make alone, and never one you make because of a post on the internet.</p><p>With that fixed in place, the real argument is worth your time.</p><p><strong>The incentive problem, stated honestly</strong></p><p>Here is the part the thread gets right, stripped of the scare.</p><p>A cured patient leaves. A managed patient comes back every month, for life. Those two things produce very different revenue, and any system run for profit will feel a pull &#8212; not a conspiracy, a pull &#8212; toward the second.</p><p>That&#8217;s not a claim about any single drug being bad. Statins genuinely lower heart attack risk. Antidepressants genuinely help people. The drug working and the incentive being skewed are separate facts, and both can be true. The Goldman note doesn&#8217;t say the drugs don&#8217;t work. It says curing is worse for cash flow than managing, which is simply true.</p><p>Where the thread misleads is in the sweep. It puts eight drugs on one list with one sneer, and they are not one category. Sort them and the picture gets honest:</p><p>Replacement &#8212; insulin, levothyroxine. Giving back what the body can&#8217;t make. Never the villain. Never in question.</p><p>Prevention that works while taken &#8212; statins, blood pressure drugs. They lower a real risk. Stop them and the risk returns, which the thread frames as a scam and is actually just how prevention works. A seatbelt only works while worn. That isn&#8217;t a trick.</p><p>Management of a symptom &#8212; reflux drugs, some others, handed out &#8220;with no end date attached.&#8221; This is the category where the thread&#8217;s question has real force: has anyone checked whether you still need it, or did the prescription just never get reviewed?</p><p>The thread&#8217;s crime is treating all three as the same. The truth is that the incentive problem is real for the third category, arguable for the second, and a dangerous lie for the first.</p><p><strong>What the deficiency cures actually teach</strong></p><p>The thread&#8217;s other half is the list of real cures &#8212; scurvy and citrus, pellagra and food, rickets and sunlight. All true. All real. Not one made a shareholder rich.</p><p>But notice what every single one of those was. A deficiency. The body was missing one specific thing, you put it back, the disease ended. Scurvy is a vitamin C hole. Pellagra is a niacin hole. Rickets is a vitamin D hole. Fill the hole, cure the disease.</p><p>That&#8217;s a real and beautiful lesson, and it&#8217;s also the exact lesson the supplement industry weaponises to sell you things you don&#8217;t need. &#8220;They cured scurvy with a vitamin, so this vitamin will cure your&#8212;&#8221; no. Deficiency diseases are cured by fixing deficiencies. Your belly fat, your fatigue, your joint pain over 50 are mostly not single-nutrient deficiencies, and pretending they are is how you end up with 150 supplement bottles and no result.</p><p>The honest version: the deficiency cures prove that sometimes the answer is a missing input, not a lifelong drug. Which means the useful question isn&#8217;t &#8220;is my drug a scam.&#8221; It&#8217;s &#8220;has anyone checked whether I&#8217;m missing something fixable underneath it.&#8221;</p><p><strong>What nobody knows, including me</strong></p><p>Three honest gaps.</p><p>Nobody can tell you, from a headline, whether your specific medication is still buying you something. That&#8217;s not knowable from the internet. It&#8217;s knowable from your bloodwork and the doctor who ordered it, and anyone online telling you your prescription is a trap has never seen your results.</p><p>Nobody has cleanly separated how much of the &#8220;manage don&#8217;t cure&#8221; pattern is sinister incentive and how much is that chronic diseases are genuinely hard to cure. Type 2 diabetes is not hepatitis C. Hep C is a virus you can clear. Aging metabolism is not a virus, and &#8220;why haven&#8217;t they cured it&#8221; sometimes has the boring answer that it&#8217;s actually very hard, not that someone&#8217;s hiding the cure.</p><p>And mine: I find this thread emotionally satisfying, and that&#8217;s exactly why I don&#8217;t trust my first read of it. &#8220;Big Pharma keeps you sick on purpose&#8221; is a story that feels good to believe, and stories that feel good are the ones I check hardest, because the feeling is doing work the evidence should be doing. The incentive problem is real. My urge to make it bigger and cleaner than it is &#8212; that&#8217;s the thing to watch.</p><p>Certainty is what the supplement industry sells. So is a clean villain.</p><p><strong>The strongest case against everything above</strong></p><p>The pushback is serious and I&#8217;ll make it properly.</p><p>Someone will say I&#8217;m being too soft &#8212; that the incentive problem is worse than &#8220;a pull,&#8221; that companies have suppressed and buried and priced-gouged, and that dressing it up as &#8220;well, prevention just works that way&#8221; lets a genuinely rigged system off the hook. There&#8217;s truth in that. The Goldman note exists. Insulin pricing in America is a scandal. The anger in the thread is pointing at something real.</p><p>Concede it. The system has earned a lot of the suspicion aimed at it.</p><p>The correction still holds, because the suspicion, however earned, does not make it safe to act on at the level of your own medicine cabinet. A rigged system and a necessary prescription can both be true. The insulin price being a scandal does not make the insulin unnecessary &#8212; those are different fights, and the thread blurs them in a way that could get a reader killed. You can believe the incentives are broken and keep taking the drug that&#8217;s keeping you alive. In fact that&#8217;s the only sane position.</p><p><strong>What I got wrong</strong></p><p>I&#8217;ve shared versions of this before &#8212; the pharma-incentive take, the &#8220;food cured scurvy and made nobody rich&#8221; line. It&#8217;s a good line. It&#8217;s mostly true.</p><p>What I didn&#8217;t do, the times I shared it, was separate the categories. I let insulin sit on the same list as omeprazole and felt clever about the whole sweep, and I never once thought about the type 1 diabetic reading it. That was careless in exactly the way that matters most, because the people most likely to act on &#8220;your drug is a trap&#8221; are the anxious ones, and the anxious ones include people on drugs they cannot stop. A take can be mostly right and still land on the wrong person. I didn&#8217;t hold that carefully enough.</p><p>Three things you can do this week, none of which is touching a medication.</p><p>&#8594; Never stop or skip a prescribed drug because of anything you read online &#8212; this post included. If a thread makes you want to bin a prescription, that&#8217;s the signal to call your doctor, not the pharmacy bin. Especially anything replacing a hormone: insulin, thyroid, hormone therapy. Those are not on the table.</p><p>&#8594; Separate your own list into the three categories. Replacement, prevention, symptom-management. Just knowing which of your drugs is which tells you which ones there&#8217;s even a question worth asking about, and which there isn&#8217;t.</p><p>&#8594; Write down how long you&#8217;ve been on each one, and when it was last reviewed. Not to stop anything. To walk into your next appointment with the one fair question the thread&#8217;s author actually landed: &#8220;I&#8217;ve been on this twenty years &#8212; is it still buying me something, and should we check?&#8221;</p><p>Useful. But it&#8217;s not the checklist.</p><p>What turns those three loose ideas into something you can actually use is the exact set of questions to bring to your doctor &#8212; which drug type gets which question, what to ask them to check underneath a symptom-management drug, and the two things you never question no matter what you read.</p><p>the 4-question checklist &#8212; which of your medications is worth a conversation and which to leave completely alone, the exact questions to ask your doctor for each type, what to ask them to test underneath a long-term symptom drug, and the two categories you never touch.</p><p><strong>The 4-question checklist for your own medicine cabinet</strong></p>
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   ]]></content:encoded></item><item><title><![CDATA[Still hoping a pill fixes this?]]></title><description><![CDATA[A biotech CEO says a longevity drug is 3 years away. The same drug's been "almost here" since 1993.]]></description><link>https://stayyoung.substack.com/p/still-hoping-a-pill-fixes-this</link><guid isPermaLink="false">https://stayyoung.substack.com/p/still-hoping-a-pill-fixes-this</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Fri, 28 Aug 2026 05:56:35 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!3IqE!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1b90298e-710c-4857-8e06-a7e205856d45_782x782.webp" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>Joe Betts-LaCroix, a biotech CEO, went on a podcast and laid out nine reasons aging is about to be solved. A gene that doubled a lifespan. An AI that cracked an 80-year-old math problem. A drug, maybe, by 2030.</p><p>It&#8217;s a good list. It&#8217;s also doing something quiet, and once you see it you can&#8217;t unsee it.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!3IqE!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1b90298e-710c-4857-8e06-a7e205856d45_782x782.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!3IqE!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1b90298e-710c-4857-8e06-a7e205856d45_782x782.webp 424w, /__u/substackcdn.com/image/fetch/$s_!3IqE!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1b90298e-710c-4857-8e06-a7e205856d45_782x782.webp 848w, /__u/substackcdn.com/image/fetch/$s_!3IqE!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1b90298e-710c-4857-8e06-a7e205856d45_782x782.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!3IqE!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1b90298e-710c-4857-8e06-a7e205856d45_782x782.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!3IqE!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1b90298e-710c-4857-8e06-a7e205856d45_782x782.webp" width="782" height="782" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/1b90298e-710c-4857-8e06-a7e205856d45_782x782.webp&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:782,&quot;width&quot;:782,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:38984,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/webp&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:false,&quot;topImage&quot;:true,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/212996077?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1b90298e-710c-4857-8e06-a7e205856d45_782x782.webp&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!3IqE!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1b90298e-710c-4857-8e06-a7e205856d45_782x782.webp 424w, /__u/substackcdn.com/image/fetch/$s_!3IqE!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1b90298e-710c-4857-8e06-a7e205856d45_782x782.webp 848w, /__u/substackcdn.com/image/fetch/$s_!3IqE!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1b90298e-710c-4857-8e06-a7e205856d45_782x782.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!3IqE!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1b90298e-710c-4857-8e06-a7e205856d45_782x782.webp 1456w" sizes="100vw" fetchpriority="high"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>It&#8217;s a good list. It&#8217;s also doing something quiet, and once you see it you can&#8217;t unsee it.</p><p>Watch what happens between reason three and reason nine. Reason three is a worm. Reason nine is a drug in your medicine cabinet in three years. Somewhere in the middle, without anyone saying so, the worm turned into you.</p><p>That gap is the whole story. Not because the science is fake. Because the science is real and the timeline is a sales pitch, and telling them apart is the difference between hope and being sold hope.</p><p><strong>The worm was real. Start there, because it&#8217;s the good part.</strong></p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;eea2a762-5aa3-461f-9503-c4ffeef6cdb2&quot;,&quot;duration&quot;:null}"></div><p>In 1993, a researcher at UC San Francisco changed a single gene in a millimetre-long soil worm, and it lived more than twice as long as normal.</p><p>Source: Kenyon et al., &#8220;A C. elegans mutant that lives twice as long as wild type.&#8221; Nature, 1993. <a href="https://pubmed.ncbi.nlm.nih.gov/8247153/">https://pubmed.ncbi.nlm.nih.gov/8247153/</a></p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;30a75830-f2d9-4928-92a8-5aea0a6ace5f&quot;,&quot;duration&quot;:null}"></div><p>That was a genuine turning point, and the thread is right to lead with it. Before that, most people treated aging as simple wearing-out &#8212; the body runs down like a coat runs threadbare, and nothing you do to one thread changes the cloth. The worm broke that. If flipping one gene doubles a lifespan, aging is not just wear. It&#8217;s controlled by machinery, and machinery can, in principle, be adjusted.</p><p>The gene was called daf-2. It sits in a pathway that senses nutrients &#8212; the same insulin and growth-signalling wiring humans share. That&#8217;s why the finding mattered beyond worms. It wasn&#8217;t a fluke of one strange animal. It touched biology we carry too.</p><p>Over 1,000 papers have been built on that one worm since. It is one of the most studied genes in all of biology. The thread&#8217;s reason three is not hype. It&#8217;s the foundation.</p><p>Here&#8217;s the part the thread skips.</p><p><strong>Between the worm and you sit thirty years and a wall</strong></p><p>The worm lived twice as long in 1993. It is now 2026. Where is the human version?</p><p>It doesn&#8217;t exist, and the reason is not laziness or lack of money. The reason is that the distance from a worm to a person is not a detail you cross with more funding. It&#8217;s most of the problem.</p><p>A worm lives about three weeks. You can watch its entire lifespan in a lab over a long weekend, flip a gene, and see the whole result before the month is out. A human lifespan is the experiment nobody can afford to run, because the scientist dies before the subject does. Everything downstream of that worm &#8212; the mice, the cells in dishes, the pathways mapped &#8212; is an attempt to bridge a gap that biology makes genuinely hard to bridge.</p><p>And bodies get more complicated as they get bigger and longer-lived. A worm has about a thousand cells. You have around 37 trillion, with immune systems and cancer-suppression machinery and backup systems the worm never needed. A gene tweak that cleanly doubles a simple organism&#8217;s life often does messy, mixed, or nothing-much things in a mammal. Some of these interventions, in mice, trade a longer life for more tumours, or a smaller body, or infertility.</p><p>None of this means the worm was meaningless. It means the worm was the starting line, and the thread is selling it as the finish.</p><p><strong>&#8220;Aging is a disease you can reverse&#8221; &#8212; hold that one to the light</strong></p><p>The thread&#8217;s second reason is that aging isn&#8217;t inevitable, it&#8217;s a treatable disease you can prevent and even reverse.</p><p>Half of that is a serious scientific position. Half is a word doing more work than it&#8217;s earned.</p><p>The serious half: a growing camp of real researchers argues aging should be treated as the root cause underneath heart disease, cancer, and dementia, rather than fighting each one separately after it arrives. That&#8217;s not fringe. It&#8217;s the premise behind the actual human trial the whole field is waiting on, which we&#8217;ll get to.</p><p>The word doing too much work is &#8220;reverse.&#8221; Slowing aging, delaying the diseases of aging, and reversing aging are three different claims with three different amounts of evidence behind them, and the thread blends them into one smooth sentence. Delaying &#8212; plausible, being tested. Slowing &#8212; plausible in animals, unproven in you. Reversing, in a human, in the way that word makes you picture &#8212; that is not a thing anyone has shown, and the confident ones who imply otherwise are standing well ahead of their own data.</p><p>Reverse is the word that sells the supplement. Delay is the word the honest scientists actually use.</p><p><strong>The drug the thread is really pointing at</strong></p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;3ae95c80-4d13-4e2a-8cb9-a5c94865fe51&quot;,&quot;duration&quot;:null}"></div><p>Reason nine says an anti-aging drug could be approved by 2030. This is where I can show you the gap between the podcast and the lab, because there&#8217;s a real human trial sitting exactly here, and its story is the honest version of &#8220;three years away.&#8221;</p><p>It&#8217;s called TAME &#8212; Targeting Aging with Metformin. The plan is to take an old, cheap, extremely well-understood diabetes drug and test whether it delays a whole cluster of aging diseases at once in older adults. If it works, it wouldn&#8217;t just be a drug. It would be the first official proof that aging itself can be treated, which is the exact thing the thread is promising.</p><p>Source: Barzilai et al., &#8220;Metformin as a Tool to Target Aging.&#8221; Cell Metabolism, 2016.</p><p>Here is the number the thread will never give you. That trial was designed in 2016. It is 2026. It has still not fully run, largely because nobody will fund it &#8212; a treatment for aging doesn&#8217;t fit how drugs get approved or sold, so the money that pours into a weight-loss drug won&#8217;t come for this.</p><p>Ten years. Designed, agreed with regulators, championed by one of the most respected people in the field, and still stuck at the starting gate for want of funding. That is what &#8220;three years away&#8221; actually looks like from the inside. Not a countdown. A decade of &#8220;almost.&#8221;</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;30cfd84f-add5-455c-b987-aac63e2eaeca&quot;,&quot;duration&quot;:null}"></div><p><strong>What nobody knows, including the CEO</strong></p><p>Three honest gaps, and the third is mine.</p><p>Nobody has extended a healthy human lifespan with a drug. Not once. Every lifespan-doubling headline you have ever read was an animal &#8212; a worm, a fly, a mouse. The human result that would justify the excitement has never been produced, and a CEO whose company&#8217;s value depends on it arriving is not a neutral narrator of when it will.</p><p>Nobody knows if &#8220;three years to a longevity drug&#8221; is real or is the same three years the field has been promising for two decades. Fusion power has been thirty years away for seventy years. Aging drugs have been almost-here for as long as I&#8217;ve been reading about them. The prediction might come true this time. It has been wrong every time so far, and that record is data too.</p><p>And mine: I don&#8217;t know how much of my own instinct to believe this is the science and how much is that I want it to be true. I&#8217;m over the age where this stops being abstract. That wanting is exactly the thing a hopeful podcast is built to use, and I catch myself leaning toward the optimistic read for reasons that have nothing to do with evidence. So I try to check the timeline against the funding, not against the feeling.</p><p>Certainty is what the supplement industry sells. This is a field whose most honest people say &#8220;we don&#8217;t know yet, and the trial hasn&#8217;t run.&#8221;</p><p><strong>The strongest case against everything above</strong></p><p>The pushback here is strong, and I&#8217;d be dishonest to wave it off.</p><p>This is real science, done by serious people, and the direction is genuinely hopeful. The worm finding was a true paradigm shift. The insulin-signalling pathway it revealed is real biology you share. Treating aging as an upstream cause rather than fighting each disease downstream is a legitimate, well-argued position, not a gimmick. And the CEO isn&#8217;t lying &#8212; the pieces he&#8217;s describing are all real pieces. Dismissing all of it as hype would be its own kind of stupidity, the cynical mirror of the credulous reader, equally wrong.</p><p>Concede all of it. The science is real and the future might be bright.</p><p>The correction still holds, and it&#8217;s narrow. The thread takes real science and welds a consumer timeline onto it &#8212; three years, by 2030, it&#8217;s basically here &#8212; and that weld is the part with no evidence. A 52-year-old reading this at midnight will take one of two things from it. Either &#8220;a drug is coming, so I can wait,&#8221; which is the dangerous read, because the thing that actually works for you is available today and free. Or &#8220;the future is hopeful, and meanwhile I&#8217;ll do the boring proven stuff,&#8221; which is the true read. The science earns the second. The thread is engineered to produce the first.</p><p><strong>What I got wrong</strong></p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;3be99d50-f80a-45f2-95ee-d08abc335da2&quot;,&quot;duration&quot;:null}"></div><p>I used to forward things like this. A big hopeful science thread, a doubled lifespan, look-how-close-we-are &#8212; I&#8217;d send it round and feel good about it.</p><p>What I stopped noticing was that reason one, buried in the list, quietly excuses the reader from doing anything. &#8220;Humans are naturally built to avoid exercise.&#8221; It&#8217;s framed as a fun fact about your ancient genes. It also hands you a permission slip: it&#8217;s not your fault you don&#8217;t move, it&#8217;s evolution. That&#8217;s the one line in the whole thread that could actually shorten your life, and it&#8217;s dressed up as science trivia. I forwarded that framing more than once before I saw what it was doing.</p><p>Three things you can do this week, free, no drug required.</p><p>&#8594; Do the one thing the thread admits works, in its own first line. Reason one concedes that exercise is proven, works, and costs nothing, then spends the rest of the list on genes and AI. Everything after reason one is a reason to wait. Reason one is the reason not to. Move today.</p><p>&#8594; Read &#8220;a drug by 2030&#8221; as &#8220;keep doing the proven thing until then.&#8221; Even if the optimists are right, the drug is years away and you are not. The gap between now and then is filled by the boring stuff that already works.</p><p>&#8594; Notice the permission slips. &#8220;Your genes make you avoid exercise&#8221; is true and it is also an excuse wearing a lab coat. When a health fact conveniently lets you off the hook, that&#8217;s the moment to look harder at it, not relax.</p><p>Useful. None of it is the protocol.</p><p>What the free half leaves out is the part that&#8217;s actually in your hands: the specific proven levers that do, today, what the drug promises for 2030 &#8212; the muscle, the movement, the protein, the sleep that a hundred worm studies keep quietly pointing back toward. Not a cure. The real, unglamorous version that works while you wait for the glamorous one that might not come.</p><p>the proven levers that already do what the 2030 drug promises, the muscle and movement protocol for a body over 50, and the honest short list of what moves your aging versus what only moves a headline.</p><p><strong>While you wait for the drug, here&#8217;s what already works</strong></p>
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   ]]></content:encoded></item><item><title><![CDATA[KIDNEY FAILURE at just 32 Years old.He trains frequently. He's in good shape. He eats healthy. He doesn't smoke. ]]></title><description><![CDATA[A 32-year-old.]]></description><link>https://stayyoung.substack.com/p/kidney-failure-at-just-32-years-oldhe</link><guid isPermaLink="false">https://stayyoung.substack.com/p/kidney-failure-at-just-32-years-oldhe</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Mon, 24 Aug 2026 11:18:06 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!A93I!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5d535ad9-d2b0-4a36-b485-520f399d75ad_1125x1200.png" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>A 32-year-old. Trains often, eats well, doesn&#8217;t smoke, in good shape. The kind of person who assumes the word &#8220;kidney failure&#8221; belongs to somebody else.</p><p>He finished a long race in high heat and felt fine. A few days later his feet swelled, the nausea came, the exhaustion came, and then the sign that sent him to hospital: he almost stopped producing urine.</p><p>Acute kidney injury. No diabetes, no high blood pressure, no history of any of it.</p><p>The doctor asked what he was taking. The answer sounded like nothing.</p><p>Ibuprofen. Before the run to head off the pain, and again after because his body felt numb.</p><p>That was the missing piece. Not the drug on its own. The drug at the exact wrong moment.</p><h3>The thing your reader needs before anything else</h3><p>If you take medication for blood pressure, read this part twice.</p><p>Two of the most common blood pressure drug types &#8212; the ones often ending in &#8220;-pril&#8221; or &#8220;-sartan&#8221; &#8212; stack with anti-inflammatory painkillers in a way that raises the risk to your kidneys. Add dehydration on top, from heat or a stomach bug or a hard day&#8217;s sweat, and you have three things pulling in the same dangerous direction at once.</p><p>Nobody is saying stop anything. This is a sentence to say to your doctor or pharmacist: <em>&#8220;I take this for my blood pressure &#8212; is it safe for me to take ibuprofen, and when isn&#8217;t it?&#8221;</em> That one question, asked once, is the whole point of this post. Most people on both have never asked it.</p><p><strong>Do not stop any prescribed medication because of this. This is a conversation to have, not a decision to make alone.</strong></p><h3>Who the danger was actually built for</h3><p>The man in the story wasn&#8217;t reckless. He was doing what runners are taught &#8212; take something for the pain, keep going.</p><p>But look at the exact conditions that hurt him. A long endurance effort. Extreme heat. Heavy fluid loss. A painkiller taken on both sides of it. That&#8217;s a specific, stacked situation, not &#8220;took ibuprofen once for a headache.&#8221;</p><p>The lesson isn&#8217;t that the pill is poison. It&#8217;s that the pill has a context where it turns dangerous, and that context &#8212; dehydration plus heat plus dose plus other medications &#8212; is invisible to someone who&#8217;s been told over-the-counter means safe. The danger was never in the tablet. It was in the moment it was taken.</p><h3>What these drugs actually do to your kidneys</h3><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!A93I!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5d535ad9-d2b0-4a36-b485-520f399d75ad_1125x1200.png" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!A93I!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5d535ad9-d2b0-4a36-b485-520f399d75ad_1125x1200.png 424w, /__u/substackcdn.com/image/fetch/$s_!A93I!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5d535ad9-d2b0-4a36-b485-520f399d75ad_1125x1200.png 848w, /__u/substackcdn.com/image/fetch/$s_!A93I!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5d535ad9-d2b0-4a36-b485-520f399d75ad_1125x1200.png 1272w, /__u/substackcdn.com/image/fetch/$s_!A93I!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5d535ad9-d2b0-4a36-b485-520f399d75ad_1125x1200.png 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!A93I!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5d535ad9-d2b0-4a36-b485-520f399d75ad_1125x1200.png" width="1125" height="1200" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/5d535ad9-d2b0-4a36-b485-520f399d75ad_1125x1200.png&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:1200,&quot;width&quot;:1125,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:139313,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/png&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/212510646?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5d535ad9-d2b0-4a36-b485-520f399d75ad_1125x1200.png&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!A93I!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5d535ad9-d2b0-4a36-b485-520f399d75ad_1125x1200.png 424w, /__u/substackcdn.com/image/fetch/$s_!A93I!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5d535ad9-d2b0-4a36-b485-520f399d75ad_1125x1200.png 848w, /__u/substackcdn.com/image/fetch/$s_!A93I!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5d535ad9-d2b0-4a36-b485-520f399d75ad_1125x1200.png 1272w, /__u/substackcdn.com/image/fetch/$s_!A93I!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5d535ad9-d2b0-4a36-b485-520f399d75ad_1125x1200.png 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Here&#8217;s the mechanism, in plain terms, because it&#8217;s the part that holds up&#8230;</p>
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   ]]></content:encoded></item><item><title><![CDATA[Your painkiller might be building the pain]]></title><description><![CDATA[That&#8217;s the story going around, told on a podcast,]]></description><link>https://stayyoung.substack.com/p/your-painkiller-might-be-building</link><guid isPermaLink="false">https://stayyoung.substack.com/p/your-painkiller-might-be-building</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Sat, 22 Aug 2026 10:09:36 GMT</pubDate><enclosure url="https://substack-post-media.s3.amazonaws.com/public/images/1a493125-1bbd-4eeb-9f19-d398abcacbd2_1454x1010.png" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>A famous ultrarunner took 800mg of ibuprofen a day so he could keep running through the pain.</p><p>He stopped. The pain went away.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;3f6b095a-3123-4abe-a6ca-6003171aa8b7&quot;,&quot;duration&quot;:null}"></div><p>That&#8217;s the story going around, told on a podcast, and it ends exactly where a good story should , <strong>full episode&#128071;</strong></p><div id="youtube2-9iENvZ2siTo" class="youtube-wrap" data-attrs="{&quot;videoId&quot;:&quot;9iENvZ2siTo&quot;,&quot;startTime&quot;:null,&quot;endTime&quot;:null}" data-component-name="Youtube2ToDOM"><div class="youtube-inner"><iframe src="https://www.youtube-nocookie.com/embed/9iENvZ2siTo?rel=0&amp;autoplay=0&amp;showinfo=0&amp;enablejsapi=0" frameborder="0" loading="lazy" gesture="media" allow="autoplay; fullscreen" allowautoplay="true" allowfullscreen="true" width="728" height="409"></iframe></div></div><p>Which is the first reason to slow down before you do anything with it.</p><p>One man. One anecdote. No before, no after, no way to know if it was the ibuprofen leaving or the running easing or his body finally getting a break. A tidy ending on a podcast is not a study, and &#8220;it worked for a 50-year-old who runs a hundred miles for fun&#8221; is the exact kind of evidence this newsletter exists to question.</p><p>But underneath the anecdote is a real mechanism, and the mechanism is worth your time even though the story isn&#8217;t proof.</p><p><strong>If you take a daily anti-inflammatory, do not stop it because of this post. Some are prescribed for reasons that matter, and some should not be stopped suddenly. This is a conversation to have with your doctor, not a newsletter. Read on for what to ask.</strong></p><h4>Who the daily-dose habit was built for</h4><p>Start with who does this, because it tells you whether it applies to you.</p><p>A daily 800mg habit is what you build when your job is running through pain. Ultra-athletes, soldiers, people whose whole identity depends on not stopping. The pill is not treating a condition. It is silencing a signal so the body can be pushed past where it wants to go.</p><p>That is a completely different situation from a 58-year-old taking an anti-inflammatory because a knee hurts, or because a doctor put them on one. Same drug, opposite purpose. One is muffling an alarm to keep running. The other is managing real pain from a real problem.</p><p>The story is about the first person. Most of your readers are the second. Before you take any lesson from it, notice that the lesson was written on a body that isn&#8217;t yours.</p><h4>What these drugs do to the gut</h4><p>Here is the part that holds up, because it comes from research and not from a phone call.</p><p>Anti-inflammatory painkillers &#8212; the class that includes ibuprofen and naproxen, the ones you buy without a prescription &#8212; work by blocking an enzyme that drives inflammation and pain. That same enzyme also helps maintain the protective lining of your stomach and small intestine. Block it everywhere, and you dull the pain, but you also thin the shield that keeps your own gut from digesting itself.</p><p>Most people know these drugs can upset the stomach. Fewer know they damage the small intestine further down, where you feel nothing at all.</p><p>In one study of people who took these drugs regularly, damage to the small intestine lining showed up in 71% of them, against 10% of people who didn&#8217;t take them.</p><p><em><strong>Source: </strong>Graham et al., Clinical Gastroenterology and Hepatology, 2005.</em></p><p>Seventy-one percent. That is not a rare side effect in a warning leaflet. That is most people who take them often, carrying damage they can&#8217;t feel, in a part of the gut nobody thinks about.</p><h4>The loop the thread is pointing at</h4><p>Here&#8217;s the idea worth taking seriously, stated carefully.</p><p>A damaged gut lining leaks. When the barrier that&#8217;s meant to keep gut contents in starts letting things through, the body reads it as a threat and mounts an inflammatory response. Inflammation is also what drives a lot of pain.</p><p>So the possibility the thread is circling is a loop: you take an anti-inflammatory for pain, it damages the gut, the damaged gut drives its own inflammation, and that inflammation feeds back into more pain. The thing you took to lower inflammation quietly raises it somewhere else.</p><p>Is that loop proven to be why one runner&#8217;s pain vanished? No. That&#8217;s a mechanism that could explain an anecdote, not a demonstrated cause. But the individual pieces &#8212; these drugs damage the gut, a damaged gut drives inflammation &#8212; are real and documented. The honest version is: plausible loop, real parts, unproven in any single person&#8217;s story.</p><p>What lives in your gut sits right in the middle of this, and it&#8217;s a subject on its own. Coach Dylan walked through it in <a href="/__u/fitdadformula.substack.com/p/youre-not-fat-your-gut-is-starving">You&#8217;re not fat. Your gut is starving.</a>, including the 2021 Stanford trial where fermented foods raised gut diversity while a high-fibre diet barely moved it.</p><p>Back to the pain.</p><h4>What nobody knows, including the podcast</h4><p>Three honest gaps.</p><p>Nobody has shown that stopping an anti-inflammatory makes chronic pain go away. One man on a podcast is a story, not a finding. His pain easing when he stopped could be the drug, could be the rest, could be a hundred things that changed at the same time, and there is no way to pull them apart from a phone call.</p><p>Nobody can tell you, from a study, whether the gut damage is driving your pain specifically. The 71% figure tells you damage is common. It does not tell you it&#8217;s the cause of what you feel, and anyone who says otherwise about your body has never examined it.</p><p>And the third gap is the one that matters most for you. Nobody reading this knows why you&#8217;re taking the drug in the first place. Some of these are prescribed for conditions where the benefit clearly outweighs the gut cost. Some protect against things far more serious than an irritated intestine. The right answer for a runner silencing an alarm is not the right answer for someone whose doctor prescribed the drug for a reason. Only the doctor who knows your case can weigh that, and I&#8217;d rather say that plainly than pretend a newsletter can.</p><p>Certainty is what the supplement industry sells. This is a real mechanism with a genuinely open question sitting on top of it.</p><h4>The strongest case against everything above</h4><p>The pushback here is important, and it&#8217;s medical.</p><p>These drugs are not villains. For a lot of people they are the difference between moving and not moving, between sleeping through the night and not. Untreated pain has its own costs &#8212; it wrecks sleep, drops activity, feeds depression, and drives people toward far worse things than ibuprofen. Frightening someone off a drug that&#8217;s genuinely helping them, over a gut mechanism they may not even have, could do more harm than the pills ever would.</p><p>Concede all of it. If a drug is keeping you functional and your doctor knows you&#8217;re on it, the story of one runner is not a reason to stop.</p><p>The correction still holds, narrowly and honestly.</p><p>Not &#8220;throw the pills away.&#8221; The correction is: if you&#8217;ve been taking a daily anti-inflammatory for a long time, on your own, without anyone checking what it&#8217;s doing to your gut, you&#8217;re carrying a real and common risk you were probably never told about. That&#8217;s worth a conversation. Not a panic, and not a newsletter telling you to quit. A conversation, with the person who can actually see your case.</p><h4>What I got wrong</h4><p>For years the take in this space &#8212; including here &#8212; was simple: anti-inflammatories are the safe, boring, over-the-counter option, and the real risks are the prescription stuff. That was lazy. &#8220;Available without a prescription&#8221; got quietly treated as &#8220;harmless with daily long-term use,&#8221; and those are not the same sentence. Common and casual is not the same as consequence-free, and I repeated the easy version for a long time.</p><p>Three things you can do this week, none of which is stopping a medication on your own.</p><p>&#8594; <strong>Count your real weekly dose before you do anything else.</strong> Not the label. What you actually take, honestly, across a week. Most people who lean on these have never added it up, and you can&#8217;t have a useful conversation with a doctor without the real number.</p><p>&#8594; <strong>Book the conversation, don&#8217;t make the decision.</strong> If you&#8217;ve been on a daily dose for months or years, that&#8217;s the week to ask your doctor two things: is this still the right tool for me, and should we check what it&#8217;s doing to my gut. Bring the number from above. Let them weigh it.</p><p>&#8594; <strong>Never stop a prescribed anti-inflammatory suddenly on your own.</strong> Some are protecting against things you can&#8217;t feel, and some cause problems when stopped abruptly. The move is a conversation, not a cold-turkey quit prompted by a podcast.</p><p>Useful. None of it is the plan.</p><p>What the free half leaves out is the part that actually helps once you and your doctor have decided anything &#8212; the anti-inflammatory foods with real evidence behind them, the gut-repair basics for someone who&#8217;s been on these drugs a long time, and the protein and movement approach that takes load off the joints that started this whole thing.</p><p><strong>Below: </strong>the anti-inflammatory foods with actual evidence, the gut-repair basics after long-term NSAID use, and the joint-load approach that treats the source of the pain instead of muffling it.</p>
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   ]]></content:encoded></item><item><title><![CDATA[You didn't miss it. You couldn't see it.]]></title><description><![CDATA[You didn&#8217;t miss the window.]]></description><link>https://stayyoung.substack.com/p/you-didnt-miss-it-you-couldnt-see</link><guid isPermaLink="false">https://stayyoung.substack.com/p/you-didnt-miss-it-you-couldnt-see</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Mon, 17 Aug 2026 21:01:04 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!VCxq!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F71d6df85-430e-4bad-ae58-28640bc9df0f_2207x2943.jpeg" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>You didn&#8217;t miss the window. Nobody showed you where it was.</p><p>Two people, 85 and 87. Zero medications. A four-storey house they still climb. The dad is learning Adobe at 87.</p><p>Then the line that does the damage: &#8220;Your 80s are determined by what you do in your 40s-60s.&#8221;</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;7352e2b9-73af-4deb-adb9-bb701b070b2d&quot;,&quot;duration&quot;:null}"></div><p>Read that at 58, already on a tablet for your blood pressure, knees that gave up on stairs a decade ago, and it says one thing. You lost. The window shut while you were busy raising kids and paying a mortgage, and nobody told you it was open.</p><p>That line is wrong. Not soft-wrong. Wrong in a way the evidence can disprove.</p><p><strong>What the thread is actually showing you</strong></p><p>Start with what these two people are. A sample of two.</p><p>Two people, married 67 years, who found a trainer in 2002 and had the money to keep him twice a week for 23 years, who own a four-storey house, who could drive thousands of miles through COVID because their health and their bank account allowed it. That is not a formula. That is a life, with a lot of good fortune stitched through it, told backwards as if every outcome was a choice.</p><p>Some of it was choices, and good ones. The lifting, the learning, the moving, the marriage. Those are real and the research backs them, and we&#8217;ll get to the actual numbers.</p><p>But &#8220;zero medications&#8221; is not an achievement you can copy by trying harder. It is partly genetics you did not pick. A reader on medication for blood pressure or cholesterol has not failed at anything. That medication is very often the thing keeping them at 85 in the first place, and a thread that quietly frames pills as defeat is being careless with the people most likely to be reading it at midnight.</p><p>The question is never &#8220;did it work for them.&#8221; It is &#8220;who were they, and what did they start with.&#8221; And these two started with a lot.</p><p><strong>The line the evidence actually breaks</strong></p><p>Here is the claim that matters, and here is what undoes it.</p><p>The thread says your 80s were decided in your 40s. A study published this year, following 699 adults for up to 24 years, found that what predicted who lived longer was not their biological age at the start. It was the rate their biological age was climbing during the study.</p><p>Source: Longitudinal changes in epigenetic clocks predict survival, InCHIANTI cohort. Nat Aging, 2026. <a href="https://pubmed.ncbi.nlm.nih.gov/41826710/">https://pubmed.ncbi.nlm.nih.gov/41826710/</a></p><p>Sit with what that means. The people already aging fast were not sentenced. What moved the needle was the slope &#8212; the direction of travel from here &#8212; not the height they&#8217;d reached by 50. A high starting point with a flattening slope beat a low starting point still climbing.</p><p>You are not your current number. You are the direction it is moving. And the direction is set by what you do next, not by what you failed to do at 45.</p><p>The thread had the timing exactly backwards. It is not too late. It was never a single door that shut in your forties.</p><p><strong>The lever nobody put on the list</strong></p><p>The thread has seven items. It is missing one that turns out to matter as much as the exercise, and it costs not</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!VCxq!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F71d6df85-430e-4bad-ae58-28640bc9df0f_2207x2943.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!VCxq!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F71d6df85-430e-4bad-ae58-28640bc9df0f_2207x2943.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!VCxq!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F71d6df85-430e-4bad-ae58-28640bc9df0f_2207x2943.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!VCxq!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F71d6df85-430e-4bad-ae58-28640bc9df0f_2207x2943.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!VCxq!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F71d6df85-430e-4bad-ae58-28640bc9df0f_2207x2943.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!VCxq!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F71d6df85-430e-4bad-ae58-28640bc9df0f_2207x2943.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>hing.</p><p>Researchers at University College London tracked about 3,500 adults and found that regular engagement with the arts &#8212; making it or just taking it in &#8212; was linked to aging roughly 4% slower. About a year younger, biologically. The same size of effect they measured for physical activity.</p><p>Source: Arts engagement and biological aging. Innovation in Aging, via UCL, 2026.</p><p>Not painting for a living. Going to a concert. A museum. Singing. Quilting, which the mother in the thread does, and which the son filed under &#8220;hobby&#8221; without noticing it might be doing as much as the gym.</p><p>The likely mechanism is unglamorous. Creative engagement lowers long-term stress, stress drives inflammation, and inflammation speeds the clock. Take the stress down and you may take the aging rate down with it.</p><p>This is worth saying plainly because it is the opposite of the thread&#8217;s message. The arts lever has no start-by date. You can pick it up at 70 and the biology does not check when you began. A researcher on the study said the honest open question is exactly whether someone starting fresh in midlife gets the effect &#8212; but nothing about the mechanism says the door is age-locked.</p><p><strong>Where food actually fits, honestly</strong></p><p>The thread&#8217;s &#8220;real food only, never frozen, never canned&#8221; is half right and half snobbery.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;9221b123-780c-42e4-b46e-56b972694824&quot;,&quot;duration&quot;:null}"></div><p>Cooking from scratch and leaning on vegetables and protein is genuinely good, and it slows the same clock everything else here is about. But frozen vegetables are frozen at peak and often hold more nutrients than the &#8220;fresh&#8221; ones that rode a truck for a week. Canned sardines and beans are exactly the cheap, real food a fixed income can afford. The rule that matters is protein and plants, not the temperature they arrived at.</p><p>There is a piece of this the thread skips entirely, and it is the gut. What lives in your gut shapes how you handle food, how steady your energy runs, and how much inflammation you carry &#8212; which loops straight back onto the aging rate this whole post is about. That is its own subject.</p><p>Back to the window.</p><p><strong>What nobody knows, including me</strong></p><p>Three honest gaps.</p><p>The arts study is a snapshot. It found a link, not proof, and it asked people what they&#8217;d done in the last year rather than following them as they took up something new. The lead researcher said it herself: it needs replicating, and nobody has yet shown that a person starting an art hobby at 60 gets the slowdown. Plausible. Not proven.</p><p>Nobody has shown that a lower epigenetic clock number makes any individual live longer. The clocks predict across populations. Whether nudging your own number down on a Tuesday changes your Thursday has not been established, and anyone selling you a test and a supplement stack off the back of it is ahead of the science.</p><p>And the third gap is mine. I do not know how much of these two people&#8217;s late-80s independence is the lifting and the learning, and how much is a genetic hand they were dealt and a bank balance that bought them a trainer for 23 years. Neither does their son. The thread reads their outcome as proof of their method, and one uncontrolled life cannot separate the method from the luck.</p><p>Certainty is what the supplement industry sells. This is not certain. It is directional, and the direction is hopeful, which is different from a promise.</p><p><strong>The strongest case against everything above</strong></p><p>The pushback is fair, and I&#8217;ll make it properly.</p><p>The thread&#8217;s underlying instinct is right, and I don&#8217;t want to bury that under caveats. Starting earlier genuinely is better. A 45-year-old who begins lifting has more runway than a 75-year-old who does, and pretending otherwise to be kind would be its own kind of lie. Compound interest is real in bodies as in money. The parents&#8217; 23-year head start is doing real work, not just luck.</p><p>Concede it. Earlier is better. If you are 45 reading this, the thread is right that today beats next year.</p><p>The correction still holds. Because &#8220;earlier is better&#8221; and &#8220;your fate was sealed at 60&#8221; are different sentences, and the thread quietly swaps the first for the second. Better runway is not the only runway. The muscle evidence shows strength responds at 80. The survival evidence shows the slope matters more than the starting height. Earlier would have been better, and later still works, and the person who most needs to hear the second half is the one the thread just told to give up.</p><p><strong>What I got wrong</strong></p><p>This newsletter has run the &#8220;start now, your future is in your hands&#8221; line plenty of times, and it is mostly true and mostly useful. But it has an ugly twin, and I have not always kept them apart.</p><p>&#8220;You can still change this&#8221; is empowering. &#8220;So if you&#8217;re unwell, you must not have tried&#8221; is the same sentence turned into a weapon, and I have not always caught the moment one becomes the other. A reader on four medications at 62 did not fail a test. Sometimes the body just does what it does, and the honest version of this newsletter says both things at once: you have real leverage, and not everything was ever in your control.</p><p>Three things you can do this week, free, no start-by date.</p><p>&#8594; Take in one piece of art on purpose. A gallery, a concert, an hour of music with your eyes closed, an evening of the thing you used to make and stopped. The evidence says the taking-in counts, not just the making. This is the lever the thread left off the list.</p><p>&#8594; Add one flight of intent to your day. You don&#8217;t need their four-storey house. Take the stairs you already have, once, deliberately, a little faster than comfortable. Built-in movement is the real thing in the thread, and it doesn&#8217;t require the mortgage.</p><p>&#8594; Stop reading your medication list as a scorecard. If you&#8217;re on tablets that are working, that is not the failure the thread implies. It is often the reason you&#8217;re here to read this.</p><p>Useful. None of it is the plan.</p><p>What the free half leaves out is the part that actually moves your rate: the protein number that protects the muscle behind all of this, the way to train stairs and standing so they build strength instead of just tiring you, and the honest short list of what shifts the aging clock versus what just sells tests.</p><p>the protein number for a body over 50, the way to turn stairs and standing into real strength work, the arts-and-stress routine that costs nothing, and the plain list of what moves your aging rate versus what only moves your money.</p><h3>Start from where you are, not from where you should have started</h3><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://stayyoung.substack.com/subscribe?&quot;,&quot;text&quot;:&quot;Subscribe now&quot;,&quot;action&quot;:null,&quot;class&quot;:null}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/stayyoung.substack.com/subscribe"><span>Subscribe now</span></a></p><p>The thread&#8217;s plan assumes you began at 45 with a trainer. You didn&#8217;t, and it doesn&#8217;t matter.</p><p>The order below is built for someone starting now, at whatever age now is.</p><p>Move &#8594; Feed &#8594; Engage &#8594; Connect.</p><h4>1. MOVE &#8212; strength first, because it responds at any age</h4><p>The lifting is the truest thing in the thread. It is also the one most people over 60 skip because they think the window closed. It didn&#8217;t. Strength responds into your 80s.</p><p>&#8594; Sit-to-stand, every day. From a chair, no hands, stand up and sit down slowly. 2 to 3 sets of 5 to 8. This one move trains the exact strength that keeps you off the floor, and it needs no equipment and no house with four floors<br>&#8594; Stairs with intent, if you have them. Not just climbing them absent-mindedly. Once a day, take a flight a little faster than comfortable, hand on the rail. That is the parents&#8217; &#8220;built-in movement,&#8221; made deliberate<br>&#8594; 2 resistance sessions a week if you can manage them, across squat, hinge, push, pull, carry. Bands or light weights count. A trainer who works with older adults is genuinely worth it if you can afford one, and a chair and your own bodyweight work if you can&#8217;t<br>&#8594; If you&#8217;re deconditioned or have any heart or joint history, start with a doctor&#8217;s nod. This is the one place caution isn&#8217;t optional</p><h4>2. FEED &#8212; the number behind the muscle</h4><p>&#8220;High-quality protein&#8221; is not a dose. Here is the dose.</p><p>Research suggests a body over 50 needs more protein than the old guideline &#8212; expert bodies now say at least 1g per kg of body weight daily, and 1.2 to 1.5g per kg if you&#8217;re training.</p><p>&#8594; 60kg (132lb) = 72 to 90g a day<br>&#8594; 70kg (154lb) = 84 to 105g a day<br>&#8594; 80kg (176lb) = 96 to 120g a day</p><p>If you have kidney disease, this range isn&#8217;t yours. Ask your doctor for your number.</p><p>Front-load it: 25 to 35g at breakfast, within 90 minutes of waking, then again at lunch and dinner. And ignore the fresh-versus-frozen snobbery. Frozen vegetables, tinned fish, and dried beans are real food, cheap, and they hit the same targets. The parents&#8217; scratch cooking is good. The rule that &#8220;never frozen, never canned&#8221; is a preference, not a health law.</p><h4>3. ENGAGE &#8212; the lever the thread forgot</h4><p>This is the arts finding, made into a habit. It carries roughly the same weight as exercise, and it is the one most people over 50 have quietly let go of.</p><p>&#8594; One arts intake a week, minimum. A concert, a gallery, an hour of real music with nothing else on. Taking it in counts, not just making it<br>&#8594; Restart one creative thing you dropped. The instrument in the cupboard, the quilting, the sketchbook. The mother in the thread quilts, and it may be doing as much as the dad&#8217;s weights<br>&#8594; The mechanism is stress, so treat it as stress relief, not homework. If it feels like a chore, it isn&#8217;t lowering the thing it&#8217;s meant to lower. Pick what you&#8217;d actually look forward to</p><h4>4. CONNECT &#8212; the item you can&#8217;t buy or bootstrap, handled honestly</h4><p>The thread&#8217;s &#8220;67-year marriage&#8221; is not advice. Nobody can act on it. But the thing underneath it &#8212; regular contact with people you care about &#8212; is real, and it is buildable at any age.</p><p>&#8594; One recurring human contact on the calendar. A weekly call, a standing coffee, a class with other people in the room. Recurring beats spontaneous, because spontaneous quietly becomes never<br>&#8594; Choose the version with other bodies present where you can. A choir, a class, a walking group &#8212; it stacks the movement, the arts, and the connection into one outing<br>&#8594; This is not optional softness. Social connection tracks with longevity as hard as the physical stuff. It is on the list because the evidence puts it there, not to be sweet</p><p><strong>What to expect</strong></p><p>&#8594; Weeks 1 to 2: the sit-to-stand gets easier. That&#8217;s your strength answering, fast, at whatever age you are<br>&#8594; Weeks 3 to 6: stairs feel different, energy steadier<br>&#8594; Ongoing: you will not get an epigenetic readout telling you your slope changed. Judge it by what you can do and how you feel, not by a number a lab sells you<br>&#8594; The real result: not a biological age you can screenshot. The direction of travel, bent slightly, from here</p><p>Take the stairs once today, a little faster than comfortable. Then book one thing worth looking at this month.</p><p>The thread told you your 80s were decided decades ago. The people who study this for a living found the opposite: what predicts how long you live is the direction you&#8217;re moving now, not the point you&#8217;re starting from.</p><p>You didn&#8217;t miss the window. You were handed a story where the window only opened once, and that story isn&#8217;t true.</p><p><strong>One last thing.</strong></p><p><strong>Everything above is built for a body over 50 in general. It isn&#8217;t built for </strong><em><strong>your</strong></em><strong> body, because we haven&#8217;t seen your blood test.</strong></p><p><strong>That&#8217;s what we do with Dylan. You send your blood test. We read it, find what&#8217;s driving your belly fat, your crashes, your bad sleep, and build a plan around your numbers. Dylan coaches you through it and keeps you on track.</strong></p><p><strong>Want your own plan instead of a general one? <a href="https://thisguyfit.com/">Start here.</a></strong></p>]]></content:encoded></item><item><title><![CDATA[Your muscle isn't leaving. Your control is.]]></title><description><![CDATA[You have been told the enemy is muscle mass.]]></description><link>https://stayyoung.substack.com/p/your-muscle-isnt-leaving-your-control</link><guid isPermaLink="false">https://stayyoung.substack.com/p/your-muscle-isnt-leaving-your-control</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Fri, 14 Aug 2026 15:17:20 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!d6aJ!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef2ab27-3658-4211-8e01-923f805553c2_1536x1536.jpeg" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>You have been told the enemy is muscle mass.</p><p>Lift, eat protein, hold onto the mass, stay strong. That is the whole message, and it is on every fitness feed you have scrolled.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!d6aJ!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef2ab27-3658-4211-8e01-923f805553c2_1536x1536.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!d6aJ!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef2ab27-3658-4211-8e01-923f805553c2_1536x1536.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!d6aJ!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef2ab27-3658-4211-8e01-923f805553c2_1536x1536.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!d6aJ!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef2ab27-3658-4211-8e01-923f805553c2_1536x1536.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!d6aJ!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef2ab27-3658-4211-8e01-923f805553c2_1536x1536.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!d6aJ!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef2ab27-3658-4211-8e01-923f805553c2_1536x1536.jpeg" width="1456" height="1456" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef2ab27-3658-4211-8e01-923f805553c2_1536x1536.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!d6aJ!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef2ab27-3658-4211-8e01-923f805553c2_1536x1536.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!d6aJ!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef2ab27-3658-4211-8e01-923f805553c2_1536x1536.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!d6aJ!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef2ab27-3658-4211-8e01-923f805553c2_1536x1536.jpeg 1456w" sizes="100vw" fetchpriority="high"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>The mass is not the first thing to go. Your strength is.</p><p>And it does not leave at the same speed. Across the studies tracking this, muscle mass falls at roughly 1% a year after 70. Strength falls at more than 3%. Some cohorts hit 5% a year at 80 and over 10% by 90.</p><p>Read those two numbers side by side. Strength drains two to three times faster than the tissue everyone tells you to protect.</p><p>Which means you can be doing everything right, keeping the mass, watching the scale and the mirror hold steady, and still lose the thing that decides whether you can get off the floor at 80.</p><p>Nobody is measuring the part that fails first.</p><p><strong>What your body is actually doing</strong></p><p>Muscle has two separate problems after 50, and they run on different clocks.</p><p>The first is the one you know. The tissue itself shrinks and gets slower to rebuild. Your muscle has gone slightly deaf to protein, so the same meal that built muscle at 30 gets a quieter response now. That is real, and protein and lifting are the right answers to it.</p><p>The second problem is the wiring, and almost nobody talks about it.</p><p>Your muscles do not act alone. Every muscle fibre is switched on by a nerve, and that connection point &#8212; where the nerve meets the muscle &#8212; is called the neuromuscular junction. Think of it as the plug. With age, some of those plugs loosen. The signal getting from your brain to your muscle becomes less reliable.</p><p>When a nerve dies off, the muscle fibres it used to control are not automatically lost. A neighbouring nerve can reach over and adopt them. But the reach is clumsy. The rewired unit is bigger, slower, and worse at fine control.</p><p>So you can keep the muscle and still lose the command over it. The tissue is there. The wiring to drive it, fast and precisely, is fraying.</p><p>This is why strength outruns mass on the way down. Strength is not just how much muscle you have. It is how well you can switch it on.</p><p><strong>Where this hits first, and why it is worse than it sounds</strong></p><p>Power goes before strength, and power is the one that keeps you upright.</p><p>Power is force delivered fast &#8212; the thing you use to catch yourself when you trip, to stand up before you overbalance, to get a foot out in time. The paper tracked this and found power declines start earlier than strength declines, showing up in people in their forties, and in the over-70s power fell about twice as fast as strength.</p><p>Notice the order. Power fails first. Strength fails next. Mass fails slowest of all.</p><p>The fitness world has it exactly upside down. It sells you the slowest-moving problem, mass, and stays quiet about the fastest-moving one, the speed and wiring that stop a fall becoming a fracture.</p><p>There is a female-specific wrinkle here worth stating plainly. In one ten-year study, meaningful strength loss showed up in women around 50, but not in men until 70. If you are a woman, the wiring and strength problem arrives roughly two decades earlier than it does for the men writing most of the training advice. If you are a man, it comes later but it comes, and the power decline is running quietly in your forties either way.</p><p><strong>The part where inactivity is faster than aging</strong></p><p>Here is the number that should stop you.</p><p>Ten days of bed rest, in healthy older adults, cost about 13% of leg strength and 14% of stair-climbing power. Ten days.</p><p>Not ten years. Ten days flat on your back takes a bigger bite out of your strength than a decade of ordinary aging does. And older bodies lose it three to six times faster than young ones during disuse, then rebuild it slower and less completely afterward.</p><p>This reframes what a hospital stay actually is. A fall, a hip, a bad chest infection, two weeks in a bed &#8212; that is not a pause. For a body over 50 it is a cliff, and some people never climb all the way back up.</p><p>The gut plays into this too, in ways that are only now being mapped &#8212; how the bacteria in your gut may influence muscle maintenance, energy and recovery is a genuine and separate subject. Coach Dylan covered the gut end of it in <a href="/__u/fitdadformula.substack.com/p/youre-not-fat-your-gut-is-starving">You&#8217;re not fat. Your gut is starving</a>., including the 2021 Stanford trial where fermented foods lifted microbiome diversity while a high-fibre diet barely moved it.</p><p>Back to the wiring.</p><p><strong>What nobody knows yet</strong></p><p>I want to be straight about the size of the gap here, because the paper is, and that honesty is the reason to trust it over the confident thread it is quietly correcting.</p><p>Most of what we know about the failing plugs &#8212; the neuromuscular junction &#8212; comes from animals. Rats and mice. Imaging that connection directly in a living human is genuinely hard, often needing tissue from amputations or cadavers, so the human picture is stitched together from indirect electrical measures. The direction holds across species. The precise mechanism in a 58-year-old human body is still being worked out.</p><p>And the honest core of it, straight from the paper: nobody has established how much of your strength loss is the muscle shrinking versus the wiring fraying. The two have never been fully separated within the same people in the same study. Everyone agrees both matter. The relative size of each is not known.</p><p>That gap is not a reason to wait. It is the reason to do the one thing that happens to hit both at once, which is below.</p><p>Certainty is what the supplement industry sells. This is a field that says &#8220;we don&#8217;t know yet&#8221; in its own review, and that is exactly why it is worth reading.</p><p><strong>The strongest case against everything above</strong></p><p>A serious researcher would push back, and the pushback is fair.</p><p>None of this means the mass-and-protein message is wrong. Resistance training is called the gold-standard intervention in this paper for a reason. It is the single most effective thing across every mechanism at once. Protein genuinely helps, more so combined with lifting. If the &#8220;lift and eat protein&#8221; advice got you lifting, it did its job, and mocking it risks a reader dropping the one habit that actually works.</p><p>Concede all of that. The standard advice is not false. It is incomplete.</p><p>The correction holds anyway.</p><p>Because incomplete advice sends you after the wrong target. Chase mass alone and you will train the way bodybuilding taught everyone to train &#8212; slow, heavy, controlled reps, watching the tissue grow. That builds mass and barely touches power, and power is the thing failing first and fastest. You can win the metric you were told to watch and still lose the race that matters, which is the one against the fall.</p><p><strong>What I got wrong</strong></p><p>For a long stretch, the advice in this newsletter treated strength and muscle as basically the same target. Train for size, strength follows, done.</p><p>That was too neat. This paper is what changed it. Strength and mass come apart with age, and power comes apart from both, and a plan aimed only at the scale-and-mirror version of muscle quietly ignores the fastest-moving loss. That was a real gap in what got written here, and this is the correction.</p><p>Three things you can do this week, free, no equipment.</p><p>&#8594; Stand up without your hands. From a normal chair, fold your arms and rise without pushing off. If you cannot, or it is close, that is your power decline made visible, and it is trainable. Do a few every time you get up today.</p><p>&#8594; Add speed to something you already do. On the way up from a chair or the bottom of a stair, move fast on the way up, slow on the way down. Intent to move quickly is the part that trains power, and it costs you nothing.</p><p>&#8594; Protect the floor above all. If illness or surgery is coming, the priority is not getting fitter, it is not going to zero. Even standing and shifting your weight during a bad week blunts the ten-day cliff.</p><p>Useful. None of it is the protocol.</p><p>What the free half leaves out is the part that decides results: how to train speed without wrecking joints that are already complaining, the exact protein number and timing that actually clears the anabolic-resistance threshold for a body over 50, and the one session structure that hits the wiring and the mass in the same half hour.</p><p>The rest of this post is for paid members.</p><p>the power-training method that protects you from falls, the protein number and breakfast dose for a body over 50, the single non-negotiable if a hospital stay is coming, and the weekly structure that trains the wiring and the muscle together.</p><p><strong>Train the wiring, not just the tissue</strong></p>
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   ]]></content:encoded></item><item><title><![CDATA[You don't need the workout. You need breaks.]]></title><description><![CDATA[Your ten squats aren&#8217;t ten thousand steps.]]></description><link>https://stayyoung.substack.com/p/you-dont-need-the-workout-you-need</link><guid isPermaLink="false">https://stayyoung.substack.com/p/you-dont-need-the-workout-you-need</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Mon, 10 Aug 2026 19:00:39 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!feIW!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef22c1c-3878-4c98-aebf-ca9dc03bf342_715x427.jpeg" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>Your ten squats aren&#8217;t ten thousand steps. The real finding is better.</p><p>Somebody, somewhere, decided ten squats equals ten thousand steps.</p><p>They were wrong, and we&#8217;re going to spend a while on exactly how wrong, because the wrongness is more interesting than the claim. Buried under it is a real finding worth changing your day for. Not the fake one. The true one, which is quieter, harder to fit in a caption, and better news than the lie it got dressed up as.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!feIW!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef22c1c-3878-4c98-aebf-ca9dc03bf342_715x427.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!feIW!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef22c1c-3878-4c98-aebf-ca9dc03bf342_715x427.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!feIW!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef22c1c-3878-4c98-aebf-ca9dc03bf342_715x427.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!feIW!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef22c1c-3878-4c98-aebf-ca9dc03bf342_715x427.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!feIW!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef22c1c-3878-4c98-aebf-ca9dc03bf342_715x427.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!feIW!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef22c1c-3878-4c98-aebf-ca9dc03bf342_715x427.jpeg" width="715" height="427" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/0ef22c1c-3878-4c98-aebf-ca9dc03bf342_715x427.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:427,&quot;width&quot;:715,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:37623,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:false,&quot;topImage&quot;:true,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/210596623?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef22c1c-3878-4c98-aebf-ca9dc03bf342_715x427.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!feIW!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef22c1c-3878-4c98-aebf-ca9dc03bf342_715x427.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!feIW!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef22c1c-3878-4c98-aebf-ca9dc03bf342_715x427.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!feIW!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef22c1c-3878-4c98-aebf-ca9dc03bf342_715x427.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!feIW!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0ef22c1c-3878-4c98-aebf-ca9dc03bf342_715x427.jpeg 1456w" sizes="100vw" fetchpriority="high"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Start with the claim as it reached you.</p><p>A University of Texas study found that doing ten squats every forty-five minutes controls blood sugar better than a thirty-minute walk, and delivers similar benefits to hitting ten thousand steps a day. There&#8217;s usually an anatomical diagram, leg and glute muscles glowing red in a squat.</p><p>The pitch is irresistible. You are busy. You hate the treadmill. And here&#8217;s a study, from a real-sounding university, saying you can skip all of that and do a few squats by your desk instead. Ten thousand steps of benefit for the price of ten squats.</p><p>Who wouldn&#8217;t forward that.</p><p>Now take it apart, claim by claim, because almost every checkable word in it is false.</p><p>It wasn&#8217;t the University of Texas. The research came out of Zhejiang University in China and the University of Jyv&#228;skyl&#228; in Finland, published in the Scandinavian Journal of Medicine &amp; Science in Sports in 2024.</p><p>How Texas got attached, nobody can say. This is something that happens to facts on the internet &#8212; a real institution gets swapped for a more familiar one, the way a quote you can&#8217;t place drifts toward Einstein or Twain. The specificity makes it feel verified. It isn&#8217;t. It&#8217;s a costume.</p><p>It wasn&#8217;t ten squats. The men in the study did roughly three-minute movement bouts, timed and energy-matched to a walking break, not a tidy count of ten reps.</p><p>&#8220;Ten squats&#8221; is a simplification someone downstream invented because a round number is easier to remember and easier to sell than &#8220;approximately three minutes of squatting activity matched for energy expenditure.&#8221; True, but it doesn&#8217;t screenshot.</p><p>And it never said anything about ten thousand steps.</p><p>This is the big one. The study did not compare squats to ten thousand steps. It didn&#8217;t mention ten thousand steps. The number appears nowhere in the research.</p><p>Someone grafted it on because ten thousand steps is a figure everyone recognizes, a benchmark people already feel guilty about, and attaching a familiar number to an unfamiliar finding is how you make a thing go viral. Never mind that the ten-thousand-step target itself was a 1960s Japanese marketing slogan for a pedometer, not a research finding.</p><p>A made-up number got bolted onto a real study to lend it weight. The irony is thick.</p><p>So the version that reached most people &#8212; University of Texas, ten squats, equals ten thousand steps &#8212; is wrong in the institution, wrong in the protocol, wrong in the comparison. Four load-bearing facts, four errors.</p><p>Here&#8217;s where most debunkings stop. Internet lied, facts corrected, feel superior, scroll on.</p>
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   ]]></content:encoded></item><item><title><![CDATA[Your fat didn’t arrive. It moved. ]]></title><description><![CDATA[Your belly fat didn&#8217;t arrive because you started eating more.]]></description><link>https://stayyoung.substack.com/p/your-fat-didnt-arrive-it-moved</link><guid isPermaLink="false">https://stayyoung.substack.com/p/your-fat-didnt-arrive-it-moved</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Fri, 07 Aug 2026 19:01:15 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!qPlY!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F42b5c781-ba54-40b5-8396-81d946b7b3db_800x533.avif" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>Your belly fat didn&#8217;t arrive because you started eating more.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;d538edf2-aee0-46bf-bc64-097852ce15d0&quot;,&quot;duration&quot;:null}"></div><p>It arrived because the hormone that spent forty years deciding where your body stored fat stopped showing up for work &#8212; and the fat went looking for a new address.</p><p>By the end of this you&#8217;ll know which moves shift this fat, in the order that matters, the single measurement worth watching instead of the scale, and what the research honestly says about hormone therapy &#8212; including where it stops working.</p><p><strong>You didn&#8217;t gain this by failing. The same fat simply moved somewhere you can see it.</strong></p><p>You didn&#8217;t change what you eat. You might even be doing more than you used to.</p><p>The middle kept growing anyway, so you reached the conclusion anyone would: that somewhere along the way you&#8217;d lost your discipline.</p><p>But the advice you were following was written for a body that still made estrogen. Yours doesn&#8217;t, and nobody adjusted the plan for that.</p><p>So put the question to the plan that never had to answer for itself: who was &#8220;just eat less and do more cardio&#8221; actually built for?</p><p>Here&#8217;s what changed inside you, and it isn&#8217;t your willpower.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!qPlY!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F42b5c781-ba54-40b5-8396-81d946b7b3db_800x533.avif" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!qPlY!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F42b5c781-ba54-40b5-8396-81d946b7b3db_800x533.avif 424w, /__u/substackcdn.com/image/fetch/$s_!qPlY!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F42b5c781-ba54-40b5-8396-81d946b7b3db_800x533.avif 848w, /__u/substackcdn.com/image/fetch/$s_!qPlY!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F42b5c781-ba54-40b5-8396-81d946b7b3db_800x533.avif 1272w, /__u/substackcdn.com/image/fetch/$s_!qPlY!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F42b5c781-ba54-40b5-8396-81d946b7b3db_800x533.avif 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!qPlY!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F42b5c781-ba54-40b5-8396-81d946b7b3db_800x533.avif" width="800" height="533" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/42b5c781-ba54-40b5-8396-81d946b7b3db_800x533.avif&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:533,&quot;width&quot;:800,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:59852,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/avif&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/210070815?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F42b5c781-ba54-40b5-8396-81d946b7b3db_800x533.avif&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!qPlY!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F42b5c781-ba54-40b5-8396-81d946b7b3db_800x533.avif 424w, /__u/substackcdn.com/image/fetch/$s_!qPlY!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F42b5c781-ba54-40b5-8396-81d946b7b3db_800x533.avif 848w, /__u/substackcdn.com/image/fetch/$s_!qPlY!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F42b5c781-ba54-40b5-8396-81d946b7b3db_800x533.avif 1272w, /__u/substackcdn.com/image/fetch/$s_!qPlY!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F42b5c781-ba54-40b5-8396-81d946b7b3db_800x533.avif 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Start with the mechanism, because it has three linked parts and they explain the whole thing. For decades, estrogen told your body to store fat on your hips and thighs &#8212; the metabolically quiet places. As estrogen falls through menopause, that instruction disappears, and the fat starts going to your abdomen instead: the visceral kind, packed deep around your organs rather than sitting under the skin.</p><p>At the same time, the drop in estrogen raises insulin resistance, which pushes even more fat toward your center. And underneath all of it, muscle is quietly declining &#8212; a process called sarcopenia &#8212; and less muscle means a slower rate of burning calories all day.</p><p>Put the three together and the middle grows even when nothing about your eating changed [Munshi &amp; Garg, &#8220;Obesity and Menopause,&#8221; J Midlife Health 2025, PMID 40330226].</p><p>So is it fixable? Here&#8217;s the honest half. In a study of 1,053 women aged 50 to 80, those using menopausal hormone therapy carried less visceral fat and were spared the visceral gain that usually shows up over a decade [Papadakis et al., OsteoLaus cohort, J Clin Endocrinol Metab 2018, PMID 29596606].</p><p>That&#8217;s real signal that the estrogen side of this is addressable. It&#8217;s also an association &#8212; a snapshot of women already on therapy, not proof that the therapy caused the difference &#8212; and the advantage faded in women who had stopped.</p><p>Which is why hormone therapy isn&#8217;t simply the answer, and here&#8217;s the catch spelled out. That study didn&#8217;t prove hormone therapy melts belly fat. It found a link, in women already taking it, that vanished once they stopped. And it&#8217;s a genuine medical decision with real trade-offs that only your own doctor can weigh against your own history.</p><p>That&#8217;s why every lever below works whether or not you ever have that conversation.</p><p>Before any of that, two things you can start this week without waiting on a single hormone decision.</p><p>Move your protein earlier in the day. Most people save it all for dinner, which leaves the whole morning with nothing to work with. Getting a solid dose at breakfast gives your body the raw material to hold onto the muscle that&#8217;s quietly slipping &#8212; the muscle whose loss slowed you down in the first place.</p><p>Do two short strength sessions this week. Bodyweight is fine, no equipment, no gym. Muscle is the one tissue that keeps your metabolic rate up, so every bit you rebuild works for you around the clock, not just during the workout.</p><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://stayyoung.substack.com/subscribe?&quot;,&quot;text&quot;:&quot;Subscribe now&quot;,&quot;action&quot;:null,&quot;class&quot;:null}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/stayyoung.substack.com/subscribe"><span>Subscribe now</span></a></p><p>These help on their own. But there&#8217;s an order to these levers, a number that tells you whether they&#8217;re working, and a hormone question you deserve a straight answer on.</p><p>Almost everything you were told to do here chases the scale. The scale is the wrong number for this &#8212; it can&#8217;t see the fat that matters. Below the wall: the levers that move it, in the order that matters, the single measurement to watch instead of your weight, and what the research honestly shows about hormone therapy &#8212; including where it stops working.</p><p>The levers in priority order, the one number to track instead of the scale, and the honest hormone-therapy picture.</p><p>Tonight, take a tape measure to your waist and your height, and write both numbers down.</p><p>Five minutes, and you&#8217;ll have the one measurement that tracks this &#8212; the one the scale can&#8217;t give you. The next section tells you exactly what those two numbers should add up to.</p><p>You&#8217;ve got the two measurements. Here&#8217;s the number they make, and everything that moves it.</p><p>Start with the number, because it changes what you&#8217;re aiming at. Stop tracking the scale and start tracking your waist-to-height ratio: divide your waist measurement by your height. Under 0.5 is the target.</p><p>It works because it sees what the scale and even BMI miss &#8212; the visceral fat around your organs, the kind that relocated when your estrogen fell. You can drop scale weight and still carry that fat, or hold your weight steady while your waist shrinks. This number catches what those miss.</p><p>Now the levers, in the order their leverage runs.</p><p>Resistance training, at least twice a week. This is the master lever, and it goes first for a reason: the muscle loss is the root of the slowdown, so rebuilding muscle is the closest thing there is to addressing the cause rather than chasing the symptom. Every pound of muscle you hold onto keeps your metabolic rate higher and pulls storage away from your middle. If you only have room for one change, this is it.</p><p>Protein at every meal, and cut the refined sugar. The protein feeds the muscle the strength work is trying to rebuild, so the two levers compound. Cutting refined sugar blunts the insulin resistance that estrogen&#8217;s exit left behind &#8212; the same insulin resistance that&#8217;s been steering fat to your center. These two move together.</p><p>Cardio, around 150 minutes a week at a moderate pace. This one supports rather than leads. It does real work for your heart and helps with overall calorie balance, but it isn&#8217;t the tool that rebuilds the muscle or moves the visceral fat, so it sits below strength rather than replacing it &#8212; the exact correction to the &#8220;just do more cardio&#8221; advice that stopped working for you.</p><p>Sleep, seven to nine hours. Short sleep tips your hunger hormones the wrong way &#8212; the one that says &#8220;eat&#8221; climbs, the one that says &#8220;full&#8221; drops &#8212; and you wake up fighting cravings you didn&#8217;t have to earn. Protecting sleep isn&#8217;t a soft add-on here; it&#8217;s removing a headwind that works against every other lever on the list.</p><p>Stress management. The stress-hormone side drives both the emotional eating and the central-fat storage, so calming it is a genuine lever, not a wellness throwaway. Whatever settles you &#8212; walking, breathing, time with people you trust &#8212; counts as part of the plan, not a break from it.</p><p>And last, held carefully: the hormone-therapy conversation. Here&#8217;s what the evidence showed, and its limits, so you can take it to the right person. In the OsteoLaus study, women on hormone therapy kept their visceral fat lower and were spared the usual ten-year gain. But that was an association, it faded in women who stopped, and hormone therapy carries real trade-offs that make it right for some people and wrong for others. This is a question to bring to your own doctor with your own history in hand, not a lever you apply to yourself off the back of a newsletter. Medication is another conversation some people have with their doctor too; the same rule holds &#8212; that&#8217;s their call to make with you, not mine.</p><p>One note if you&#8217;re a man reading this: a parallel shift happens to you as testosterone declines with age, the same drift of weight toward the middle. The hormone specifics differ, but the muscle-first levers above are yours too.</p><p>If someone you love is blaming herself for a middle that changed overnight &#8212; send them this.<br>It&#8217;s free to read.</p><p>Next week: the strength lever on its own, and why the muscle you hold onto after 50 protects far more than your waistline.</p><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://stayyoung.substack.com/p/your-fat-didnt-arrive-it-moved/comments&quot;,&quot;text&quot;:&quot;Leave a comment&quot;,&quot;action&quot;:null,&quot;class&quot;:null}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/stayyoung.substack.com/p/your-fat-didnt-arrive-it-moved/comments"><span>Leave a comment</span></a></p>]]></content:encoded></item><item><title><![CDATA[Your belly isn’t fat. It’s stuck cortisol.]]></title><description><![CDATA[Your middle isn&#8217;t keeping score of your willpower.]]></description><link>https://stayyoung.substack.com/p/your-belly-isnt-fat-its-stuck-cortisol</link><guid isPermaLink="false">https://stayyoung.substack.com/p/your-belly-isnt-fat-its-stuck-cortisol</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Mon, 03 Aug 2026 13:20:10 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!XiN1!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa2af414f-5176-46e0-92a4-09319b72dcf1_1280x720.webp" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>Your middle isn&#8217;t keeping score of your willpower.</p><p>It&#8217;s keeping score of a stress hormone. One that&#8217;s supposed to rise and fall on a daily clock, and in a lot of bodies over 50 that clock has gone flat.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!4H9a!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0d234af5-327a-457f-9aad-1fae363d75fc_600x333.png" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!4H9a!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0d234af5-327a-457f-9aad-1fae363d75fc_600x333.png 424w, /__u/substackcdn.com/image/fetch/$s_!4H9a!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0d234af5-327a-457f-9aad-1fae363d75fc_600x333.png 848w, /__u/substackcdn.com/image/fetch/$s_!4H9a!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0d234af5-327a-457f-9aad-1fae363d75fc_600x333.png 1272w, /__u/substackcdn.com/image/fetch/$s_!4H9a!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0d234af5-327a-457f-9aad-1fae363d75fc_600x333.png 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!4H9a!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0d234af5-327a-457f-9aad-1fae363d75fc_600x333.png" width="600" height="333" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/0d234af5-327a-457f-9aad-1fae363d75fc_600x333.png&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:333,&quot;width&quot;:600,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:19761,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/png&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:false,&quot;topImage&quot;:true,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/209619921?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0d234af5-327a-457f-9aad-1fae363d75fc_600x333.png&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!4H9a!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0d234af5-327a-457f-9aad-1fae363d75fc_600x333.png 424w, /__u/substackcdn.com/image/fetch/$s_!4H9a!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0d234af5-327a-457f-9aad-1fae363d75fc_600x333.png 848w, /__u/substackcdn.com/image/fetch/$s_!4H9a!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0d234af5-327a-457f-9aad-1fae363d75fc_600x333.png 1272w, /__u/substackcdn.com/image/fetch/$s_!4H9a!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0d234af5-327a-457f-9aad-1fae363d75fc_600x333.png 1456w" sizes="100vw" fetchpriority="high"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>By the end of this you&#8217;ll have the moves that lower that hormone, in the order to do them across a day so they work with its rhythm instead of against it. Plus the two that get passed around online and aren&#8217;t worth a minute of your time.</p><p><strong>You didn&#8217;t store that weight by being weak. Your body kept what your stress never got to burn.</strong></p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!zN4L!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F13ebf16f-66bd-425e-9e44-07c4bc32ec01_640x1137.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!zN4L!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F13ebf16f-66bd-425e-9e44-07c4bc32ec01_640x1137.webp 424w, /__u/substackcdn.com/image/fetch/$s_!zN4L!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F13ebf16f-66bd-425e-9e44-07c4bc32ec01_640x1137.webp 848w, /__u/substackcdn.com/image/fetch/$s_!zN4L!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F13ebf16f-66bd-425e-9e44-07c4bc32ec01_640x1137.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!zN4L!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F13ebf16f-66bd-425e-9e44-07c4bc32ec01_640x1137.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!zN4L!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F13ebf16f-66bd-425e-9e44-07c4bc32ec01_640x1137.webp" width="640" height="1137" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/13ebf16f-66bd-425e-9e44-07c4bc32ec01_640x1137.webp&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:1137,&quot;width&quot;:640,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:57308,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/webp&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:false,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/209619921?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F13ebf16f-66bd-425e-9e44-07c4bc32ec01_640x1137.webp&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!zN4L!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F13ebf16f-66bd-425e-9e44-07c4bc32ec01_640x1137.webp 424w, /__u/substackcdn.com/image/fetch/$s_!zN4L!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F13ebf16f-66bd-425e-9e44-07c4bc32ec01_640x1137.webp 848w, /__u/substackcdn.com/image/fetch/$s_!zN4L!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F13ebf16f-66bd-425e-9e44-07c4bc32ec01_640x1137.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!zN4L!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F13ebf16f-66bd-425e-9e44-07c4bc32ec01_640x1137.webp 1456w" sizes="100vw"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>You cut the calories. You did the workouts. The middle didn&#8217;t move.</p><p>So you drew the obvious conclusion &#8212; that you weren&#8217;t trying hard enough, that if the belly was still there the failure must be yours.</p><p>That advice was written for a food problem. What you may have is a stress problem, and the two don&#8217;t answer to the same fix.</p><p>Nobody at the nine-minute appointment stopped to ask which one you had. So put the question to the prescription that never has to defend itself: who was &#8220;just eat less and move more&#8221; actually built for?</p><p>Here&#8217;s what connects the stress to the waistline, and it isn&#8217;t a lack of discipline.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!XiN1!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa2af414f-5176-46e0-92a4-09319b72dcf1_1280x720.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!XiN1!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa2af414f-5176-46e0-92a4-09319b72dcf1_1280x720.webp 424w, /__u/substackcdn.com/image/fetch/$s_!XiN1!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa2af414f-5176-46e0-92a4-09319b72dcf1_1280x720.webp 848w, /__u/substackcdn.com/image/fetch/$s_!XiN1!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa2af414f-5176-46e0-92a4-09319b72dcf1_1280x720.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!XiN1!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa2af414f-5176-46e0-92a4-09319b72dcf1_1280x720.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!XiN1!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa2af414f-5176-46e0-92a4-09319b72dcf1_1280x720.webp" width="1280" height="720" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/a2af414f-5176-46e0-92a4-09319b72dcf1_1280x720.webp&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:720,&quot;width&quot;:1280,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:20276,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/webp&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/209619921?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa2af414f-5176-46e0-92a4-09319b72dcf1_1280x720.webp&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!XiN1!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa2af414f-5176-46e0-92a4-09319b72dcf1_1280x720.webp 424w, /__u/substackcdn.com/image/fetch/$s_!XiN1!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa2af414f-5176-46e0-92a4-09319b72dcf1_1280x720.webp 848w, /__u/substackcdn.com/image/fetch/$s_!XiN1!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa2af414f-5176-46e0-92a4-09319b72dcf1_1280x720.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!XiN1!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa2af414f-5176-46e0-92a4-09319b72dcf1_1280x720.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Start with the mechanism. When researchers measured how much cortisol people released under stress, the ones who pumped out more carried more fat around the middle &#8212; not spread evenly, but concentrated at the belly and around the organs [Epel et al., &#8220;Stress and body shape,&#8221; Psychosom Med 2000, PMID 11020091].</p><p>Cortisol is the body&#8217;s main stress hormone, and one of its jobs is deciding where fat gets parked. <a href="/__u/fitdadformula.substack.com/p/10-signs-your-cortisol-is-too-high">the signs your own cortisol is running high</a></p><p>Under chronic stress, it parks it at your center.</p><p>That study looked at women. The mechanism &#8212; stress-driven cortisol steering fat inward &#8212; isn&#8217;t a women-only story; it runs in any body kept under sustained stress, men included.</p><p>Now the hopeful half, told straight. When a stress-reduction program lowered people&#8217;s cortisol, the ones who responded showed less abdominal fat by the end [Daubenmier et al., J Obes 2011, PMID 21977314].</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!rEDa!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F61bdca2e-420b-482f-ade8-a6dfa477c045_640x400.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!rEDa!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F61bdca2e-420b-482f-ade8-a6dfa477c045_640x400.webp 424w, /__u/substackcdn.com/image/fetch/$s_!rEDa!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F61bdca2e-420b-482f-ade8-a6dfa477c045_640x400.webp 848w, /__u/substackcdn.com/image/fetch/$s_!rEDa!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F61bdca2e-420b-482f-ade8-a6dfa477c045_640x400.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!rEDa!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F61bdca2e-420b-482f-ade8-a6dfa477c045_640x400.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!rEDa!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F61bdca2e-420b-482f-ade8-a6dfa477c045_640x400.webp" width="640" height="400" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/61bdca2e-420b-482f-ade8-a6dfa477c045_640x400.webp&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:400,&quot;width&quot;:640,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:50174,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/webp&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/209619921?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F61bdca2e-420b-482f-ade8-a6dfa477c045_640x400.webp&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!rEDa!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F61bdca2e-420b-482f-ade8-a6dfa477c045_640x400.webp 424w, /__u/substackcdn.com/image/fetch/$s_!rEDa!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F61bdca2e-420b-482f-ade8-a6dfa477c045_640x400.webp 848w, /__u/substackcdn.com/image/fetch/$s_!rEDa!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F61bdca2e-420b-482f-ade8-a6dfa477c045_640x400.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!rEDa!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F61bdca2e-420b-482f-ade8-a6dfa477c045_640x400.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>That&#8217;s real signal that the lever works in the direction you&#8217;d hope. It&#8217;s also early, and honest reporting means saying the belly-fat result showed up in a subgroup, not across everyone in the trial. Enough to act on. Not enough to promise.</p><p>Here&#8217;s the frame that ties it together. Cortisol is supposed to move on a curve &#8212; high in the morning to get you up and going, sliding down through the day, bottoming out at night so you can sleep.</p><p>The problem isn&#8217;t that you have cortisol. The problem is a curve that&#8217;s gone flat or flipped: not enough in the morning, too much at night.</p><p>That stuck rhythm is the target, and it&#8217;s a rhythm, not a character flaw.</p><p>Now the honest catch, before anyone tries to move it. The belly-fat side of this is promising, not proven &#8212; the best study showed it in some people, not all, and anyone selling you guaranteed inches off your waist is running ahead of the evidence. And a lot of the &#8220;lower your cortisol fast&#8221; advice online is inflated or made up. That&#8217;s why the system further down separates what holds up from what doesn&#8217;t.</p><p>Before any of that, two safe things you can start now.</p><p>Slow your breathing tonight. Try the 4-7-8 pattern &#8212; in through the nose for four, hold for seven, out through the mouth for eight. It&#8217;s a direct signal to your nervous system that the threat has passed, and it costs nothing and works anywhere.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!1gKB!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5c989660-c3e1-4ba0-a81c-5f2f602d5f36_1440x1440.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!1gKB!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5c989660-c3e1-4ba0-a81c-5f2f602d5f36_1440x1440.webp 424w, /__u/substackcdn.com/image/fetch/$s_!1gKB!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5c989660-c3e1-4ba0-a81c-5f2f602d5f36_1440x1440.webp 848w, /__u/substackcdn.com/image/fetch/$s_!1gKB!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5c989660-c3e1-4ba0-a81c-5f2f602d5f36_1440x1440.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!1gKB!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5c989660-c3e1-4ba0-a81c-5f2f602d5f36_1440x1440.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!1gKB!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5c989660-c3e1-4ba0-a81c-5f2f602d5f36_1440x1440.webp" width="1440" height="1440" 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/__u/substackcdn.com/image/fetch/$s_!1gKB!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5c989660-c3e1-4ba0-a81c-5f2f602d5f36_1440x1440.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Cut the hidden sugar running through your day. The sauces, the &#8220;healthy&#8221; snacks, the low-fat foods that make up for lost fat with added sugar. It&#8217;s the fuel for the afternoon crash that spikes stress and drives the next craving. Pull it and the loop loses its engine.</p><p>Both help anytime. But cortisol runs on a clock, and doing the right thing at the wrong hour is why most people&#8217;s efforts stall.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!SJuz!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27c0c95b-3e9d-4893-9c48-1de2c773c679_548x559.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!SJuz!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27c0c95b-3e9d-4893-9c48-1de2c773c679_548x559.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!SJuz!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27c0c95b-3e9d-4893-9c48-1de2c773c679_548x559.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!SJuz!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27c0c95b-3e9d-4893-9c48-1de2c773c679_548x559.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!SJuz!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27c0c95b-3e9d-4893-9c48-1de2c773c679_548x559.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!SJuz!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27c0c95b-3e9d-4893-9c48-1de2c773c679_548x559.jpeg" width="548" height="559" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/27c0c95b-3e9d-4893-9c48-1de2c773c679_548x559.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:559,&quot;width&quot;:548,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:59878,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/209619921?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27c0c95b-3e9d-4893-9c48-1de2c773c679_548x559.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!SJuz!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27c0c95b-3e9d-4893-9c48-1de2c773c679_548x559.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!SJuz!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27c0c95b-3e9d-4893-9c48-1de2c773c679_548x559.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!SJuz!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27c0c95b-3e9d-4893-9c48-1de2c773c679_548x559.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!SJuz!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27c0c95b-3e9d-4893-9c48-1de2c773c679_548x559.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Nine &#8220;lower your cortisol&#8221; moves get passed around, and a couple of them are dressed-up nonsense. Below the wall: the ones that hold up, mapped to the one thing that decides whether any of them work &#8212; your cortisol&#8217;s daily rhythm &#8212; plus the two you can drop without losing a thing.</p>
      <p>
          <a href="/__u/stayyoung.substack.com/p/your-belly-isnt-fat-its-stuck-cortisol">
              Read more
          </a>
      </p>
   ]]></content:encoded></item><item><title><![CDATA[Your genes set the odds. You deal the hand.]]></title><description><![CDATA[Your genes loaded some of this.]]></description><link>https://stayyoung.substack.com/p/your-genes-set-the-odds-you-deal</link><guid isPermaLink="false">https://stayyoung.substack.com/p/your-genes-set-the-odds-you-deal</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Fri, 31 Jul 2026 21:51:50 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!j3Kl!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fdcc9d02e-a6ff-425b-b30f-83783bfceacc_620x494.jpeg" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>Your genes loaded some of this. Your Tuesdays are loading the rest.</p><p>Most of how you age is something you&#8217;re doing, not something you were born holding. Two bodies the same age can sit a decade apart on the inside, and the inherited part explains far less of that gap than you were led to believe.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!j3Kl!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fdcc9d02e-a6ff-425b-b30f-83783bfceacc_620x494.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!j3Kl!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fdcc9d02e-a6ff-425b-b30f-83783bfceacc_620x494.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!j3Kl!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fdcc9d02e-a6ff-425b-b30f-83783bfceacc_620x494.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!j3Kl!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fdcc9d02e-a6ff-425b-b30f-83783bfceacc_620x494.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!j3Kl!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fdcc9d02e-a6ff-425b-b30f-83783bfceacc_620x494.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!j3Kl!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fdcc9d02e-a6ff-425b-b30f-83783bfceacc_620x494.jpeg" width="620" height="494" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/dcc9d02e-a6ff-425b-b30f-83783bfceacc_620x494.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:494,&quot;width&quot;:620,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:21625,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:false,&quot;topImage&quot;:true,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/209309513?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fdcc9d02e-a6ff-425b-b30f-83783bfceacc_620x494.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!j3Kl!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fdcc9d02e-a6ff-425b-b30f-83783bfceacc_620x494.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!j3Kl!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fdcc9d02e-a6ff-425b-b30f-83783bfceacc_620x494.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!j3Kl!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fdcc9d02e-a6ff-425b-b30f-83783bfceacc_620x494.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!j3Kl!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fdcc9d02e-a6ff-425b-b30f-83783bfceacc_620x494.jpeg 1456w" sizes="100vw" fetchpriority="high"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Your genes set the odds. What you do every day still deals the hand.</p><p>You noticed the changes and you asked about them. The stiffer mornings. The softer middle that arrived without a change in how you eat. The afternoon where the lights seem to dim early.</p><p>You went in and asked why.</p><p>What came back was a shrug and the word &#8220;aging.&#8221; No bloodwork past the basics, no plan, no curiosity about you specifically. Just a general script, the same one handed to everyone who shows up around your age.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!arWs!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fded0a805-45d1-4f75-87cd-6f4a4fbdd21b_664x800.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!arWs!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fded0a805-45d1-4f75-87cd-6f4a4fbdd21b_664x800.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!arWs!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fded0a805-45d1-4f75-87cd-6f4a4fbdd21b_664x800.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!arWs!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fded0a805-45d1-4f75-87cd-6f4a4fbdd21b_664x800.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!arWs!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fded0a805-45d1-4f75-87cd-6f4a4fbdd21b_664x800.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!arWs!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fded0a805-45d1-4f75-87cd-6f4a4fbdd21b_664x800.jpeg" width="664" height="800" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/ded0a805-45d1-4f75-87cd-6f4a4fbdd21b_664x800.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:800,&quot;width&quot;:664,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:25220,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:false,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/209309513?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fded0a805-45d1-4f75-87cd-6f4a4fbdd21b_664x800.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!arWs!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fded0a805-45d1-4f75-87cd-6f4a4fbdd21b_664x800.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!arWs!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fded0a805-45d1-4f75-87cd-6f4a4fbdd21b_664x800.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!arWs!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fded0a805-45d1-4f75-87cd-6f4a4fbdd21b_664x800.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!arWs!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fded0a805-45d1-4f75-87cd-6f4a4fbdd21b_664x800.jpeg 1456w" sizes="100vw"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>So put the question to the script that the script never has to answer: who decided your decline was fixed, and what were they looking at when they decided it?</p><p>Here&#8217;s what drives the decline, and it isn&#8217;t the calendar.</p><p>In the 1960s, five healthy young men spent three weeks flat on their backs. Complete bed rest, no activity, in what became the Dallas Bed Rest Study. When researchers measured their aerobic capacity afterward, the drop was severe: around a 27% fall in VO&#8322; max in three weeks. VO&#8322; max is the amount of oxygen your body can pull in and use when you push hard, one of the most honest single readouts of physical condition there is.</p><p>Then the same men were tracked down thirty years later and measured again. Thirty years of ordinary aging cost them roughly 12% more.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!EkTu!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fc684c58b-0a6b-46b7-bf7f-632e22df64e0_640x258.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!EkTu!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fc684c58b-0a6b-46b7-bf7f-632e22df64e0_640x258.webp 424w, /__u/substackcdn.com/image/fetch/$s_!EkTu!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fc684c58b-0a6b-46b7-bf7f-632e22df64e0_640x258.webp 848w, /__u/substackcdn.com/image/fetch/$s_!EkTu!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fc684c58b-0a6b-46b7-bf7f-632e22df64e0_640x258.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!EkTu!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fc684c58b-0a6b-46b7-bf7f-632e22df64e0_640x258.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!EkTu!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fc684c58b-0a6b-46b7-bf7f-632e22df64e0_640x258.webp" width="640" height="258" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/c684c58b-0a6b-46b7-bf7f-632e22df64e0_640x258.webp&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:258,&quot;width&quot;:640,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:26482,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/webp&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/209309513?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fc684c58b-0a6b-46b7-bf7f-632e22df64e0_640x258.webp&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!EkTu!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fc684c58b-0a6b-46b7-bf7f-632e22df64e0_640x258.webp 424w, /__u/substackcdn.com/image/fetch/$s_!EkTu!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fc684c58b-0a6b-46b7-bf7f-632e22df64e0_640x258.webp 848w, /__u/substackcdn.com/image/fetch/$s_!EkTu!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fc684c58b-0a6b-46b7-bf7f-632e22df64e0_640x258.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!EkTu!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fc684c58b-0a6b-46b7-bf7f-632e22df64e0_640x258.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Read that twice. Three weeks of doing nothing did more damage to their engines than the next three decades of getting older [McGuire et al., Dallas Bed Rest and Training Study, 30-year follow-up; finding restated in the 50-year revisit, PMID 31609661].</p><p>The lever was movement, and the absence of it.</p><p>That fitness you can build is also tied to how long you live. Across roughly 122,000 adults sent through a treadmill test, higher cardiorespiratory fitness lined up with lower death from any cause &#8212; and there was no ceiling, no point where being more fit stopped helping, which is the part that runs against the &#8220;you can overdo it at your age&#8221; advice most people absorb [Mandsager et al., JAMA Netw Open 2018, PMID 30646252].</p><p>Both studies say one sentence: the master lever is how much you move, and it responds at any age, including yours.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!fdBz!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3122a713-2174-4595-890c-cda6d5c2454e_639x604.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!fdBz!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3122a713-2174-4595-890c-cda6d5c2454e_639x604.webp 424w, /__u/substackcdn.com/image/fetch/$s_!fdBz!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3122a713-2174-4595-890c-cda6d5c2454e_639x604.webp 848w, /__u/substackcdn.com/image/fetch/$s_!fdBz!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3122a713-2174-4595-890c-cda6d5c2454e_639x604.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!fdBz!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3122a713-2174-4595-890c-cda6d5c2454e_639x604.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!fdBz!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3122a713-2174-4595-890c-cda6d5c2454e_639x604.webp" width="639" height="604" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3122a713-2174-4595-890c-cda6d5c2454e_639x604.webp 424w, /__u/substackcdn.com/image/fetch/$s_!fdBz!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3122a713-2174-4595-890c-cda6d5c2454e_639x604.webp 848w, /__u/substackcdn.com/image/fetch/$s_!fdBz!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3122a713-2174-4595-890c-cda6d5c2454e_639x604.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!fdBz!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3122a713-2174-4595-890c-cda6d5c2454e_639x604.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Now the honest part, because a lot of what gets shared as settled isn&#8217;t. Plenty of the &#8220;anti-aging&#8221; advice that circulates online is observational &#8212; it noticed a pattern, it didn&#8217;t prove a cause &#8212; or it&#8217;s a single small study, or a real finding stretched well past what it showed. The clearest example is the exercise-and-memory claim you may have seen: a year of aerobic training did grow a brain structure called the hippocampus, but the memory improvement didn&#8217;t clearly beat the control group when the study was scrutinized. I&#8217;d rather tell you that than sell you the tidy version. It&#8217;s why the ranked list further down separates what&#8217;s proven from what&#8217;s only promising.</p><p>Before any of that, a few safe moves you can start now without knowing a single number about yourself.</p><p>Break up your sitting. Get out of the chair and move for two minutes every hour you&#8217;re awake. That&#8217;s the Dallas lesson shrunk to fit a normal day, the opposite of bed rest, applied in small doses across the whole of it.</p><p>Put oily fish on your plate a couple of times a week. Salmon, mackerel, sardines. It&#8217;s the food route to omega-3, one of the levers on the ranked list, and it asks nothing of you but a swap at the counter.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!Jnt1!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd4bb2aaf-9913-47e9-8719-c7d1076c3e22_649x472.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!Jnt1!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd4bb2aaf-9913-47e9-8719-c7d1076c3e22_649x472.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!Jnt1!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd4bb2aaf-9913-47e9-8719-c7d1076c3e22_649x472.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!Jnt1!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd4bb2aaf-9913-47e9-8719-c7d1076c3e22_649x472.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!Jnt1!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd4bb2aaf-9913-47e9-8719-c7d1076c3e22_649x472.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!Jnt1!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd4bb2aaf-9913-47e9-8719-c7d1076c3e22_649x472.jpeg" width="649" height="472" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/d4bb2aaf-9913-47e9-8719-c7d1076c3e22_649x472.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:472,&quot;width&quot;:649,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:49267,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/209309513?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd4bb2aaf-9913-47e9-8719-c7d1076c3e22_649x472.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!Jnt1!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd4bb2aaf-9913-47e9-8719-c7d1076c3e22_649x472.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!Jnt1!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd4bb2aaf-9913-47e9-8719-c7d1076c3e22_649x472.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!Jnt1!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd4bb2aaf-9913-47e9-8719-c7d1076c3e22_649x472.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!Jnt1!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd4bb2aaf-9913-47e9-8719-c7d1076c3e22_649x472.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Get real daylight into your eyes early. Not through a window. Outside, within an hour or so of waking. It anchors the body clock that governs sleep, appetite, and how your inflammation runs through the day.</p><p>Those are the safe entry points. The real question is which levers do the most, and which two aren&#8217;t worth the space in your head.</p><p>A dozen &#8220;anti-aging&#8221; levers get passed around online. Some are noise, a few are inflated past what the research says, and a handful change how you age. Below the wall: the ones that survive the evidence, ranked strongest first &#8212; the real number for each, and the two you can safely ignore.</p><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://stayyoung.substack.com/subscribe?&quot;,&quot;text&quot;:&quot;Subscribe now&quot;,&quot;action&quot;:null,&quot;class&quot;:null}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/stayyoung.substack.com/subscribe"><span>Subscribe now</span></a></p><p>The levers that survive the evidence &#8212; ranked, with real doses, and the ones to ignore.</p><p>Here&#8217;s the list the internet keeps handing you in the wrong order, put back in the order the evidence supports. Several of these got their reach from science communicators &#8212; Rhonda Patrick among them &#8212; but the findings belong to the researchers who ran the studies, so that&#8217;s who they&#8217;re credited to here. Strongest and most proven first.</p><p>Move more, sit less. This is the master lever and everything else amplifies it. The mechanism is the whole first half of this post: inactivity strips your aerobic engine faster than years do, and fitness tracks how long you live with no upper limit of benefit [PMID 31609661; PMID 30646252]. The dose is almost insultingly simple &#8212; more walking, fewer unbroken hours in a chair, a body that gets asked to work most days. Status: proven, and the best-supported thing on this list. If you do nothing else here, do this.</p><p>Raise your VO&#8322; max with intervals. The specific tool is the Norwegian 4&#215;4: four minutes of hard effort, three minutes easy, repeated four times, done about twice a week. Hard means near-maximal, the zone where you can only get a few words out, not a comfortable jog. Warm up for eight to ten easy minutes first, never cold into a four-minute effort, and if you have a heart condition, take medication, or get chest symptoms, clear it with a doctor before the first hard session. The reason this belongs on the list and not in the &#8220;too intense for you&#8221; bin: adults aged 70 to 77 ran this exact protocol safely for five years and held their fitness [Stensvold et al., Generation 100, BMJ 2020, PMID 33028588]. Status: proven feasible, and one of the most time-efficient ways to move the master lever.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!RJFd!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F06acc5c7-878f-4dfd-a3bc-6595620a1842_2913x1311.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!RJFd!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F06acc5c7-878f-4dfd-a3bc-6595620a1842_2913x1311.webp 424w, /__u/substackcdn.com/image/fetch/$s_!RJFd!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F06acc5c7-878f-4dfd-a3bc-6595620a1842_2913x1311.webp 848w, /__u/substackcdn.com/image/fetch/$s_!RJFd!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F06acc5c7-878f-4dfd-a3bc-6595620a1842_2913x1311.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!RJFd!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F06acc5c7-878f-4dfd-a3bc-6595620a1842_2913x1311.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!RJFd!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F06acc5c7-878f-4dfd-a3bc-6595620a1842_2913x1311.webp" width="1456" height="655" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/06acc5c7-878f-4dfd-a3bc-6595620a1842_2913x1311.webp&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:655,&quot;width&quot;:1456,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:102532,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/webp&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/209309513?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F06acc5c7-878f-4dfd-a3bc-6595620a1842_2913x1311.webp&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!RJFd!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F06acc5c7-878f-4dfd-a3bc-6595620a1842_2913x1311.webp 424w, /__u/substackcdn.com/image/fetch/$s_!RJFd!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F06acc5c7-878f-4dfd-a3bc-6595620a1842_2913x1311.webp 848w, /__u/substackcdn.com/image/fetch/$s_!RJFd!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F06acc5c7-878f-4dfd-a3bc-6595620a1842_2913x1311.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!RJFd!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F06acc5c7-878f-4dfd-a3bc-6595620a1842_2913x1311.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Aerobic exercise for the brain. In older adults, a year of regular aerobic exercise &#8212; roughly three sessions a week &#8212; grew the hippocampus by about 2%, winding back one to two years of the shrinkage that normally comes with age [Erickson et al., PNAS 2011, PMID 21282661]. Carry the caveat from earlier with you: the brain volume grew, the memory benefit was contested. So this one earns its place on structure, not on a guaranteed sharper memory. Status: volume-proven, memory promising. The dose is the same movement you&#8217;re already being told to do, which is what makes it cheap.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!qrCZ!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F553b403c-afd0-4ebf-bb62-4bd65b51d622_579x530.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!qrCZ!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F553b403c-afd0-4ebf-bb62-4bd65b51d622_579x530.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!qrCZ!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F553b403c-afd0-4ebf-bb62-4bd65b51d622_579x530.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!qrCZ!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F553b403c-afd0-4ebf-bb62-4bd65b51d622_579x530.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!qrCZ!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F553b403c-afd0-4ebf-bb62-4bd65b51d622_579x530.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!qrCZ!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F553b403c-afd0-4ebf-bb62-4bd65b51d622_579x530.jpeg" width="579" height="530" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F553b403c-afd0-4ebf-bb62-4bd65b51d622_579x530.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!qrCZ!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F553b403c-afd0-4ebf-bb62-4bd65b51d622_579x530.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!qrCZ!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F553b403c-afd0-4ebf-bb62-4bd65b51d622_579x530.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!qrCZ!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F553b403c-afd0-4ebf-bb62-4bd65b51d622_579x530.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Omega-3, food first. Omega-3 is a fat your body needs and can&#8217;t make, so it has to come in through what you eat. Its most measurable effect is on inflammation: pooling 32 meta-analyses, omega-3 from EPA and DHA significantly lowered CRP, the main inflammation marker in blood [Kavyani et al., 2022, PMID 35914448]. Get it from oily fish first. If you&#8217;re considering a supplement, that&#8217;s a conversation with your provider, not a shelf you grab blind. Status: proven for the inflammation marker.</p><p>Sauna, if you have access to one. Frequent use &#8212; around four to seven sessions a week &#8212; was associated with much lower cardiovascular death compared with using it once a week, and this isn&#8217;t a men-only finding: a cohort of 1,688 men and women, average age 63, showed the same dose-dependent link [Laukkanen et al., PMID 25705824]. If there&#8217;s no sauna in your life, a hot bath gives you some of the same cardiovascular and blood-pressure effect. Status: association, but a strong and consistent one. A genuine lever if it&#8217;s available to you, and an easy thing to ignore guilt-free if it isn&#8217;t.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!THOm!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6f7aa5e7-784e-4889-899b-6d2f18f09a41_480x638.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!THOm!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6f7aa5e7-784e-4889-899b-6d2f18f09a41_480x638.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!THOm!, /__u/stayyoung.substack.com/w_848, 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/__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6f7aa5e7-784e-4889-899b-6d2f18f09a41_480x638.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Vitamin D &#8212; test, then correct. Running low is common, and low levels have been tied to higher dementia risk in observational studies. Whether topping it up changes that risk is not settled, so the honest move is to test first, correct if you&#8217;re low, don&#8217;t megadose, and confirm the dose with your provider. Status: association-only. Worth checking, not worth the panic the online versions try to sell.</p><p>Time-restricted eating, held lightly. A modest overnight fast &#8212; stopping a few hours before bed and not eating late &#8212; may support the body&#8217;s cellular clean-up process, autophagy. But most of that evidence is from animals, and the human timing isn&#8217;t established, so this sits near the bottom on purpose. Status: promising, thin in humans. A reasonable habit for sleep and glucose, not a switch that scrubs your cells clean overnight whatever a thread told you.</p><p>Now the part most posts leave out. Here&#8217;s what didn&#8217;t make the cut, and why leaving it out is the point.</p><p>The choline-in-pregnancy item &#8212; higher choline, smarter children, six eggs a day. Real research exists on maternal choline, but it&#8217;s advice for pregnant women, and this isn&#8217;t a pregnancy newsletter. Off-audience, cut.</p><p>The golf-course-and-Parkinson&#8217;s claim &#8212; living near one raises your risk by some dramatic percentage because of pesticides. A thin observational association dressed up as proven cause, and it tips toward the kind of fear-first, chemicals-are-out-to-get-you framing that&#8217;s usually wrong and always corrosive. Cut.</p><p>The microplastic multipliers &#8212; &#8220;55 times more toxins,&#8221; &#8220;thousands per cup.&#8221; The underlying concern is fair and the one safe action survives: don&#8217;t heat food or drink in plastic. The specific numbers don&#8217;t hold up as stated, so they&#8217;re gone. The action stays. The scary figures don&#8217;t.</p><p>Cutting those three is what makes the seven above worth trusting. A list that keeps everything is a list that checked nothing.</p><p>If someone you love keeps being told &#8220;it&#8217;s just your age&#8221; &#8212; send them this.</p><p>It&#8217;s free to read.</p><p>Next week: the 4&#215;4 on its own, done right &#8212; the intensity most people get wrong, and the warm-up that keeps it safe.</p><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://stayyoung.substack.com/p/your-genes-set-the-odds-you-deal/comments&quot;,&quot;text&quot;:&quot;Leave a comment&quot;,&quot;action&quot;:null,&quot;class&quot;:null}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/stayyoung.substack.com/p/your-genes-set-the-odds-you-deal/comments"><span>Leave a comment</span></a></p><p></p>]]></content:encoded></item><item><title><![CDATA[Half of this list was tested on yeast]]></title><description><![CDATA[&#8220;Harvard&#8217;s anti-aging protocol.]]></description><link>https://stayyoung.substack.com/p/half-of-this-list-was-tested-on-yeast</link><guid isPermaLink="false">https://stayyoung.substack.com/p/half-of-this-list-was-tested-on-yeast</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Tue, 28 Jul 2026 03:34:04 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!qlcE!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa565e823-54ca-4450-ac6f-5043b11d9d10_487x410.jpeg" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>&#8220;Harvard&#8217;s anti-aging protocol. Dr. Sinclair reversed his biological age by nearly a decade. Here&#8217;s the 6-step routine the world&#8217;s leading genetics expert uses to stay young.&#8221;</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!qlcE!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa565e823-54ca-4450-ac6f-5043b11d9d10_487x410.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!qlcE!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa565e823-54ca-4450-ac6f-5043b11d9d10_487x410.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!qlcE!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa565e823-54ca-4450-ac6f-5043b11d9d10_487x410.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!qlcE!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa565e823-54ca-4450-ac6f-5043b11d9d10_487x410.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!qlcE!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa565e823-54ca-4450-ac6f-5043b11d9d10_487x410.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!qlcE!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa565e823-54ca-4450-ac6f-5043b11d9d10_487x410.jpeg" width="487" height="410" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa565e823-54ca-4450-ac6f-5043b11d9d10_487x410.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!qlcE!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa565e823-54ca-4450-ac6f-5043b11d9d10_487x410.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!qlcE!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa565e823-54ca-4450-ac6f-5043b11d9d10_487x410.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!qlcE!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa565e823-54ca-4450-ac6f-5043b11d9d10_487x410.jpeg 1456w" sizes="100vw" fetchpriority="high"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Six steps follow. Exercise, resveratrol, fasting, cold, NAD, blood sugar.</p><p>Start with the claim, because the whole list hangs from it.</p><p>&#8220;Reversed his biological age by nearly a decade.&#8221; No panel is shown. No test is named. No before, no after, no date. It is a sentence about one man&#8217;s body, offered with no measurement attached, and it is doing the same job the &#8220;aging is optional&#8221; line at the bottom is doing. It exists to make you read the six steps as a protocol that reverses aging, rather than as six habits of varying quality.</p><p>So take the six steps on their own, away from the man and the missing number.</p><p>Two of them are among the best-evidenced things you can do for a body over 50. Two are genuinely uncertain and were made famous in a species that is not you. One is oversold. And one is being sold to you in a form the science does not support.</p><p>The thread lists them as equals. They are not equals. Sorting them is the entire job.</p><h3>The two steps that survive being 55</h3><p>Start where the ground is solid, because the thread buries the strong steps between the weak ones and lets them all borrow the same credibility.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!8Onv!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5fee69c9-3d9e-4e8a-ac99-b38311e73366_640x427.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!8Onv!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5fee69c9-3d9e-4e8a-ac99-b38311e73366_640x427.webp 424w, /__u/substackcdn.com/image/fetch/$s_!8Onv!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5fee69c9-3d9e-4e8a-ac99-b38311e73366_640x427.webp 848w, /__u/substackcdn.com/image/fetch/$s_!8Onv!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5fee69c9-3d9e-4e8a-ac99-b38311e73366_640x427.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!8Onv!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5fee69c9-3d9e-4e8a-ac99-b38311e73366_640x427.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!8Onv!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5fee69c9-3d9e-4e8a-ac99-b38311e73366_640x427.webp" width="640" height="427" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5fee69c9-3d9e-4e8a-ac99-b38311e73366_640x427.webp 424w, /__u/substackcdn.com/image/fetch/$s_!8Onv!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5fee69c9-3d9e-4e8a-ac99-b38311e73366_640x427.webp 848w, /__u/substackcdn.com/image/fetch/$s_!8Onv!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5fee69c9-3d9e-4e8a-ac99-b38311e73366_640x427.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!8Onv!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5fee69c9-3d9e-4e8a-ac99-b38311e73366_640x427.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p><strong>Exercise.</strong> Short bursts of harder effort do more for a body over 50 than a flat walk. The mechanism the thread waves at is real. Higher-intensity intervals push your aerobic capacity, which is the single strongest predictor of how long you live, and they do it faster than steady low-effort movement. This step is correct. Keep it.</p><p><strong>Blood sugar.</strong> A flatter glucose line across the day is one of the few things with evidence in every direction at once. It touches energy, fat storage, sleep and inflammation. The thread&#8217;s own advice here is sound, and it is the least exciting item on the list, which is probably why it sits at position 6 instead of position 1.</p><p>Notice what happened. The two steps that actually work for you are the two with no famous molecule attached. No supplement to buy. No brand. Exercise and steadier meals.</p><p>Hold that thought, because it explains the shape of the rest of the list.</p><h3>The two steps that were famous in yeast</h3><p>Resveratrol and NAD are the reason this list exists. They are also the two with your name furthest from the data.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!fd-P!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3ffe3147-13cf-44ef-af86-1bb170793b37_554x554.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!fd-P!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3ffe3147-13cf-44ef-af86-1bb170793b37_554x554.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!fd-P!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3ffe3147-13cf-44ef-af86-1bb170793b37_554x554.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!fd-P!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3ffe3147-13cf-44ef-af86-1bb170793b37_554x554.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!fd-P!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3ffe3147-13cf-44ef-af86-1bb170793b37_554x554.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!fd-P!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3ffe3147-13cf-44ef-af86-1bb170793b37_554x554.jpeg" width="554" height="554" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3ffe3147-13cf-44ef-af86-1bb170793b37_554x554.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!fd-P!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3ffe3147-13cf-44ef-af86-1bb170793b37_554x554.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!fd-P!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3ffe3147-13cf-44ef-af86-1bb170793b37_554x554.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!fd-P!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3ffe3147-13cf-44ef-af86-1bb170793b37_554x554.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p><strong>Resveratrol.</strong> This is the wine molecule, and it made the man in the thread famous around 2006, when it extended life in yeast, then in worms and flies. The human results never followed in the same way. A large trial of a resveratrol-based drug was halted years ago, and the compound&#8217;s own story quietly stalled while the supplements kept selling. The thread says it &#8220;mimics fasting and exercise.&#8221; You have fasting. You have exercise. You do not need a molecule to imitate the two things already on the same list.</p><p><strong>NAD and NMN.</strong> NAD is real and it does drop with age, and that is genuine biology, not marketing. The cellular fuel that helps your body repair DNA runs lower every decade. The leap the thread makes is from &#8220;NAD drops&#8221; to &#8220;so take NMN and turn back the clock.&#8221; Raising the raw material and reversing aging are two different sentences, and only the first has decent human evidence. Whether topping up NAD does anything you can feel, or anything that shows up in how you age, has not been established in people.</p><p>Here is the wrong-population problem stated plainly. The famous results for both of these came from yeast, worms, flies and mice. Short-lived creatures in a lab, where you can watch a whole lifespan in weeks and a molecule looks miraculous. Nobody has run the study that would matter to you, which is the one where you take these for years and something measurable happens to a human over 50. That study does not exist. The supplements are sold as though it does.</p><h3>The step sold to you in the wrong form</h3><p><strong>Fasting.</strong> The biology here is real. Going without food for a stretch does switch on your cells&#8217; self-cleaning process, and that process does slow with age. The step earns its place.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!PiKM!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5cfba606-ba99-49d1-91d0-0b858cbaef09_480x640.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!PiKM!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5cfba606-ba99-49d1-91d0-0b858cbaef09_480x640.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!PiKM!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5cfba606-ba99-49d1-91d0-0b858cbaef09_480x640.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!PiKM!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5cfba606-ba99-49d1-91d0-0b858cbaef09_480x640.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!PiKM!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5cfba606-ba99-49d1-91d0-0b858cbaef09_480x640.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!PiKM!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5cfba606-ba99-49d1-91d0-0b858cbaef09_480x640.jpeg" width="480" height="640" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5cfba606-ba99-49d1-91d0-0b858cbaef09_480x640.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!PiKM!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5cfba606-ba99-49d1-91d0-0b858cbaef09_480x640.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!PiKM!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5cfba606-ba99-49d1-91d0-0b858cbaef09_480x640.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!PiKM!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5cfba606-ba99-49d1-91d0-0b858cbaef09_480x640.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>The form is the problem, and it is a problem specifically for the body reading this.</p><p>&#8220;Fewer meals, more repair&#8221; is the thread&#8217;s version. For a body over 50, fewer meals is also fewer chances to hit the protein target that keeps your muscle from leaving. Your muscle has gone slightly deaf to protein with age, so it needs a bigger, clearer signal at each meal, not fewer meals. Skip breakfast to chase autophagy and you can win a little cellular cleanup while quietly losing the muscle that actually determines how the next twenty years go.</p><p>That trade is almost never named in a fasting thread, because the threads are written for a body that builds muscle easily. Yours does not, anymore. The fast that works for a 30-year-old man is not automatically the fast that works for you, and the difference is measured in the tissue you cannot easily get back.</p><h3>The step with a real question attached</h3><p><strong>Cold.</strong> Cold showers, ice baths, fewer layers. The thread says this burns fat and slows aging through hormesis, the idea that a small stress makes the body stronger.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!ibTq!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1a4ac735-7873-4bb4-bbc1-bd69b05fbf2a_995x1770.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!ibTq!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1a4ac735-7873-4bb4-bbc1-bd69b05fbf2a_995x1770.webp 424w, /__u/substackcdn.com/image/fetch/$s_!ibTq!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1a4ac735-7873-4bb4-bbc1-bd69b05fbf2a_995x1770.webp 848w, /__u/substackcdn.com/image/fetch/$s_!ibTq!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1a4ac735-7873-4bb4-bbc1-bd69b05fbf2a_995x1770.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!ibTq!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1a4ac735-7873-4bb4-bbc1-bd69b05fbf2a_995x1770.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!ibTq!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1a4ac735-7873-4bb4-bbc1-bd69b05fbf2a_995x1770.webp" width="995" height="1770" 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/__u/substackcdn.com/image/fetch/$s_!ibTq!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1a4ac735-7873-4bb4-bbc1-bd69b05fbf2a_995x1770.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>The cold research is mostly young, mostly male, measured over minutes, looking at metabolism and mood in the moment. Whether repeated cold exposure changes how a body over 50 ages has not been shown. It may lift your mood. It may sharpen you for an hour. Those are real and they are worth something. &#8220;Slows aging&#8221; is a much bigger claim than the evidence carries.</p><p>There is also a specific caution the thread skips. A hard cold plunge is a jolt to your heart and blood pressure. If you have any cardiac history or blood pressure issue, the ice bath is a conversation with your doctor before it is anything else. A thread that hands ice baths to a 60-year-old audience without that line is being careless with the exact readers most likely to act on it.</p><h3>What steadier blood sugar actually touches</h3><p>One more thing about the blood sugar step, because it opens a door the thread walks past.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!Gmia!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fe8e81a42-0e26-4c9e-810d-963631eb2a55_789x389.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!Gmia!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, 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/__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fe8e81a42-0e26-4c9e-810d-963631eb2a55_789x389.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>The glucose line and the gut are connected. What lives in your gut shapes how you handle a meal, how steady your energy runs, and how well you sleep, which loops straight back onto the same cortisol and blood sugar rhythm this whole list is trying to fix.</p><p>That is its own subject and it does not fit here. Coach Dylan wrote it up properly. <a href="/__u/fitdadformula.substack.com/p/youre-not-fat-your-gut-is-starving">You&#8217;re not fat. Your gut is starving.</a> walks through the 2021 Stanford trial where fermented foods lifted gut diversity while a high-fibre diet barely moved it.</p><p>Back to the list.</p><h3>The bill</h3><p>Add up what the thread actually asks of you.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!e3IT!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F09db204d-c9cb-4ae6-b7fc-940cb96dba37_2448x3264.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!e3IT!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F09db204d-c9cb-4ae6-b7fc-940cb96dba37_2448x3264.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!e3IT!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F09db204d-c9cb-4ae6-b7fc-940cb96dba37_2448x3264.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!e3IT!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F09db204d-c9cb-4ae6-b7fc-940cb96dba37_2448x3264.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!e3IT!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F09db204d-c9cb-4ae6-b7fc-940cb96dba37_2448x3264.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!e3IT!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F09db204d-c9cb-4ae6-b7fc-940cb96dba37_2448x3264.jpeg" width="1456" height="1941" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/09db204d-c9cb-4ae6-b7fc-940cb96dba37_2448x3264.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:1941,&quot;width&quot;:1456,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:438158,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/208619826?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F09db204d-c9cb-4ae6-b7fc-940cb96dba37_2448x3264.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!e3IT!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F09db204d-c9cb-4ae6-b7fc-940cb96dba37_2448x3264.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!e3IT!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F09db204d-c9cb-4ae6-b7fc-940cb96dba37_2448x3264.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!e3IT!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F09db204d-c9cb-4ae6-b7fc-940cb96dba37_2448x3264.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!e3IT!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F09db204d-c9cb-4ae6-b7fc-940cb96dba37_2448x3264.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Intervals. A resveratrol supplement. An NMN supplement. A fasting window that skips a meal. Cold showers or an ice bath. And a full blood-sugar overhaul underneath all of it.</p><p>Two of those six cost nothing and carry the strongest evidence. Two are supplements with your species&#8217; data missing. One quietly costs you muscle. One may be doing very little for anything except your morning alertness, and carries a real caution for some of you.</p><p>The supplements are the only line items with a price. They are also the two with the weakest human evidence for a body over 50. That is not a coincidence in wellness threads. It is the shape of almost all of them.</p><h3>What nobody knows, including the man in the thread</h3><p>Three honest gaps.</p><p>Nobody has shown that raising NAD in a human over 50 changes how you age. The molecule drops with age. Restoring it and reversing aging are separate claims, and only the first is on solid ground. Anyone confidently selling you the second is ahead of the evidence, and that includes people with Harvard on the door.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!c1gA!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Feb0ea1da-b245-41f9-b05a-5411b5b916db_1383x750.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!c1gA!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Feb0ea1da-b245-41f9-b05a-5411b5b916db_1383x750.webp 424w, /__u/substackcdn.com/image/fetch/$s_!c1gA!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Feb0ea1da-b245-41f9-b05a-5411b5b916db_1383x750.webp 848w, /__u/substackcdn.com/image/fetch/$s_!c1gA!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Feb0ea1da-b245-41f9-b05a-5411b5b916db_1383x750.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!c1gA!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Feb0ea1da-b245-41f9-b05a-5411b5b916db_1383x750.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!c1gA!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Feb0ea1da-b245-41f9-b05a-5411b5b916db_1383x750.webp" width="1383" height="750" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Feb0ea1da-b245-41f9-b05a-5411b5b916db_1383x750.webp 424w, /__u/substackcdn.com/image/fetch/$s_!c1gA!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Feb0ea1da-b245-41f9-b05a-5411b5b916db_1383x750.webp 848w, /__u/substackcdn.com/image/fetch/$s_!c1gA!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Feb0ea1da-b245-41f9-b05a-5411b5b916db_1383x750.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!c1gA!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Feb0ea1da-b245-41f9-b05a-5411b5b916db_1383x750.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Nobody has shown resveratrol does in a person what it did in yeast. The gap between a yeast cell and a 58-year-old is not a detail. It is most of the problem.</p><p>And the third gap is mine. I do not know how much of Sinclair&#8217;s own claimed reversal, if any, came from the supplements versus the exercise and the blood-sugar control sitting right beside them on the same list. Neither does anyone else, because the six steps were run together, on one man, with no control and no published panel. Even taking the decade at face value, it cannot tell you which step did the work. It is a testimonial, and a testimonial with six variables tells you nothing about any one of them.</p><p>Certainty is what the supplement industry sells.</p><h3>The strongest case against everything above</h3><p>A serious researcher would push back here, and part of the pushback is fair.</p><p>This man is a real scientist doing real work. The underlying idea, that aging is driven by processes you can influence rather than a fixed clock, is a serious position held by serious people, not a gimmick. NAD biology is a legitimate and active field. Resveratrol opened genuine research even if it did not deliver the pill. Dismissing all of it because supplements got oversold would throw out real science with the marketing.</p><p>Concede that. The science underneath is not the problem.</p><p>The correction holds anyway.</p><p>Because the thread does not present this as open science with uncertain human payoff. It presents it as a finished six-step protocol that reversed a named man&#8217;s age by a decade, with two supplements slotted in among four free habits so the supplements inherit the credibility of the habits. Somebody reading that at 11pm will buy the NMN and skip the intervals, because swallowing a capsule is easier than getting breathless. The science is honest. The list built from it is not.</p><h3>What I got wrong writing this</h3><p>The first draft of this went hard at the man. His company, his book, his incentives to sell you the exact molecules on the list.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!GnDz!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbb1a1551-aa7a-4202-94b8-95cae7b3a6ab_2252x4000.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!GnDz!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbb1a1551-aa7a-4202-94b8-95cae7b3a6ab_2252x4000.webp 424w, /__u/substackcdn.com/image/fetch/$s_!GnDz!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbb1a1551-aa7a-4202-94b8-95cae7b3a6ab_2252x4000.webp 848w, /__u/substackcdn.com/image/fetch/$s_!GnDz!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbb1a1551-aa7a-4202-94b8-95cae7b3a6ab_2252x4000.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!GnDz!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbb1a1551-aa7a-4202-94b8-95cae7b3a6ab_2252x4000.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!GnDz!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbb1a1551-aa7a-4202-94b8-95cae7b3a6ab_2252x4000.webp" width="1456" height="2586" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/bb1a1551-aa7a-4202-94b8-95cae7b3a6ab_2252x4000.webp&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:2586,&quot;width&quot;:1456,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:817582,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/webp&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/208619826?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbb1a1551-aa7a-4202-94b8-95cae7b3a6ab_2252x4000.webp&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!GnDz!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbb1a1551-aa7a-4202-94b8-95cae7b3a6ab_2252x4000.webp 424w, /__u/substackcdn.com/image/fetch/$s_!GnDz!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbb1a1551-aa7a-4202-94b8-95cae7b3a6ab_2252x4000.webp 848w, /__u/substackcdn.com/image/fetch/$s_!GnDz!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbb1a1551-aa7a-4202-94b8-95cae7b3a6ab_2252x4000.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!GnDz!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbb1a1551-aa7a-4202-94b8-95cae7b3a6ab_2252x4000.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>I cut all of it. It felt clever and it proved nothing, because a claim does not get weaker just because the person making it has something to sell. The resveratrol data is thin whether or not anyone profits from it. Attacking the seller is what you do when you cannot attack the evidence, and here you can attack the evidence, so the seller is beside the point.</p><p>Three things you can use tonight, free, no capsule involved.</p><p><strong>Get breathless on purpose, once.</strong> Not a flat walk. Ninety seconds where holding a conversation gets hard, then recover, then repeat a few times. This is step 1 stripped of the marketing, and it is the strongest item on the whole list.</p><p><strong>Walk ten minutes after your largest meal.</strong> This is the blood-sugar step, made concrete. It flattens the glucose spike more reliably than anything you can buy, and it costs you a short walk.</p><p><strong>Do not skip breakfast to chase autophagy.</strong> If you want a fasting window, make it an overnight one that still leaves you three real meals with enough protein in each. Cleanup is not worth the muscle.</p><p>Useful. None of it is the protocol.</p><p>What the free half leaves out is the sorting that actually matters. Which two of the six steps to build your week around and which two to drop entirely. The protein numbers that decide whether a fasting window helps you or quietly costs you. And the one order to run these in, because doing all six badly is worse than doing two of them properly.</p><p>the two steps worth your week, the two worth dropping, the protein numbers that make fasting safe for a body over 50, and the order to run the whole thing in.</p><p><strong>What are you currently taking or doing for aging that you&#8217;re not sure is doing anything?</strong></p><p>The NMN. The resveratrol. The cold showers you started in January. The fasting window you&#8217;re not certain is helping. The supplement someone convincing sold you two years ago that you keep buying out of habit.</p><p>Reply to this email, or drop it in the comments, with one line &#8212; what it is, and whether you actually feel a difference.</p><p>No judgement. I ran a bottle of something under the spare-room bed for six weeks before I admitted it did nothing.</p><p>I read every reply. If it&#8217;s junk, I&#8217;ll tell you straight. If it&#8217;s one of the few worth keeping, I&#8217;ll tell you that too.</p><p>One line is enough.</p><div class="directMessage button" data-attrs="{&quot;userId&quot;:364343734,&quot;userName&quot;:&quot;Stay Young&quot;,&quot;canDm&quot;:null,&quot;dmUpgradeOptions&quot;:null,&quot;isEditorNode&quot;:true}" data-component-name="DirectMessageToDOM"></div><h3>The order is the protocol</h3><p>Six steps presented as equals is not a protocol. It is a menu, and a menu lets you pick the easy capsule over the hard walk.</p><p>Here is the same material, sorted by what actually moves a body over 50, and stripped of the two line items you can stop paying for.</p><div><hr></div>
      <p>
          <a href="/__u/stayyoung.substack.com/p/half-of-this-list-was-tested-on-yeast">
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   ]]></content:encoded></item><item><title><![CDATA[All nine of these were built for a panic attack]]></title><description><![CDATA[That is the opening line of the thread.]]></description><link>https://stayyoung.substack.com/p/all-nine-of-these-were-built-for</link><guid isPermaLink="false">https://stayyoung.substack.com/p/all-nine-of-these-were-built-for</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Fri, 24 Jul 2026 06:23:53 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!0KsP!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6e21ee88-ff46-4189-8bd2-b79fd8c321e2_453x680.jpeg" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>That is the opening line of the thread. Then a symptom list. Loss of libido, joint pain, dark circles under the eyes, muscle weakness. Then nine ways to fix it.</p><p>Start with the claim, because everything downstream depends on it.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!0KsP!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6e21ee88-ff46-4189-8bd2-b79fd8c321e2_453x680.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!0KsP!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6e21ee88-ff46-4189-8bd2-b79fd8c321e2_453x680.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!0KsP!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6e21ee88-ff46-4189-8bd2-b79fd8c321e2_453x680.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!0KsP!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6e21ee88-ff46-4189-8bd2-b79fd8c321e2_453x680.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!0KsP!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6e21ee88-ff46-4189-8bd2-b79fd8c321e2_453x680.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!0KsP!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6e21ee88-ff46-4189-8bd2-b79fd8c321e2_453x680.jpeg" width="453" height="680" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/6e21ee88-ff46-4189-8bd2-b79fd8c321e2_453x680.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:680,&quot;width&quot;:453,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:52718,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:false,&quot;topImage&quot;:true,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/208187883?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6e21ee88-ff46-4189-8bd2-b79fd8c321e2_453x680.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!0KsP!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6e21ee88-ff46-4189-8bd2-b79fd8c321e2_453x680.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!0KsP!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6e21ee88-ff46-4189-8bd2-b79fd8c321e2_453x680.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!0KsP!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6e21ee88-ff46-4189-8bd2-b79fd8c321e2_453x680.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!0KsP!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6e21ee88-ff46-4189-8bd2-b79fd8c321e2_453x680.jpeg 1456w" sizes="100vw" fetchpriority="high"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>No study is named. No number is given. Faster by how much, measured against how many cigarettes, over what period, in whose bodies. The sentence has no content. It exists to frighten you into reading the list underneath it, and it works, which is why some version of it opens half the health threads you will scroll past this week.</p><p>Now look at the nine techniques</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!lR3p!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fefee37d0-20a0-4c0f-96da-7e7f609ab8e8_453x680.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!lR3p!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fefee37d0-20a0-4c0f-96da-7e7f609ab8e8_453x680.webp 424w, /__u/substackcdn.com/image/fetch/$s_!lR3p!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fefee37d0-20a0-4c0f-96da-7e7f609ab8e8_453x680.webp 848w, /__u/substackcdn.com/image/fetch/$s_!lR3p!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fefee37d0-20a0-4c0f-96da-7e7f609ab8e8_453x680.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!lR3p!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fefee37d0-20a0-4c0f-96da-7e7f609ab8e8_453x680.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!lR3p!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fefee37d0-20a0-4c0f-96da-7e7f609ab8e8_453x680.webp" width="453" height="680" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fefee37d0-20a0-4c0f-96da-7e7f609ab8e8_453x680.webp 424w, /__u/substackcdn.com/image/fetch/$s_!lR3p!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fefee37d0-20a0-4c0f-96da-7e7f609ab8e8_453x680.webp 848w, /__u/substackcdn.com/image/fetch/$s_!lR3p!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fefee37d0-20a0-4c0f-96da-7e7f609ab8e8_453x680.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!lR3p!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fefee37d0-20a0-4c0f-96da-7e7f609ab8e8_453x680.webp 1456w" sizes="100vw"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>.</p><p>Cold water on the face. The mammalian dive reflex. Interrupting a panic attack.</p><p>That is the population. Acute stress. A body spiking right now, needing to come down inside ninety seconds.</p><p>Read the symptom list again with that in mind. Low libido. Joint pain. Muscle weakness. Dark circles.</p><p>None of those arrive in ninety seconds. They arrive over years.</p><p>Nine acute tools, bolted onto a chronic list.</p><h3>Who was in the room for the dive reflex</h3><p>The cold water research comes from panic and anxiety work. Young bodies, in a spike, needing an emergency brake. The breathing and heart rate variability material comes from the same neighbourhood: young, healthy, often male, measured in a lab over minutes.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!toqa!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F80c832b8-0905-4a0e-a200-10b2032a2a17_1821x1817.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!toqa!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F80c832b8-0905-4a0e-a200-10b2032a2a17_1821x1817.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!toqa!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F80c832b8-0905-4a0e-a200-10b2032a2a17_1821x1817.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!toqa!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F80c832b8-0905-4a0e-a200-10b2032a2a17_1821x1817.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!toqa!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F80c832b8-0905-4a0e-a200-10b2032a2a17_1821x1817.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!toqa!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F80c832b8-0905-4a0e-a200-10b2032a2a17_1821x1817.jpeg" width="1456" height="1453" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/80c832b8-0905-4a0e-a200-10b2032a2a17_1821x1817.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:1453,&quot;width&quot;:1456,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:767779,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/208187883?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F80c832b8-0905-4a0e-a200-10b2032a2a17_1821x1817.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!toqa!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F80c832b8-0905-4a0e-a200-10b2032a2a17_1821x1817.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!toqa!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F80c832b8-0905-4a0e-a200-10b2032a2a17_1821x1817.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!toqa!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F80c832b8-0905-4a0e-a200-10b2032a2a17_1821x1817.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!toqa!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F80c832b8-0905-4a0e-a200-10b2032a2a17_1821x1817.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Every one of those studies asked the same question. Can you interrupt a stress response that is happening right now?</p><p>The answer is yes. That part is solid.</p><p>Nobody in those rooms was 57 with a cortisol rhythm that stopped behaving four years ago and never spikes at all.</p><p>That is the gap the thread walks straight past. It gives you nine brakes and never asks whether your problem is the brake.</p><h3>What your body is actually doing</h3><p>Cortisol runs on a daily curve. It should climb hard in the first thirty minutes after you wake, hold through the morning, and slope down all afternoon until it bottoms out overnight.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!058H!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F75aed7e5-4cc4-4fb0-8a6a-ce7fad9350f8_701x438.png" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!058H!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F75aed7e5-4cc4-4fb0-8a6a-ce7fad9350f8_701x438.png 424w, /__u/substackcdn.com/image/fetch/$s_!058H!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F75aed7e5-4cc4-4fb0-8a6a-ce7fad9350f8_701x438.png 848w, /__u/substackcdn.com/image/fetch/$s_!058H!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F75aed7e5-4cc4-4fb0-8a6a-ce7fad9350f8_701x438.png 1272w, /__u/substackcdn.com/image/fetch/$s_!058H!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F75aed7e5-4cc4-4fb0-8a6a-ce7fad9350f8_701x438.png 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!058H!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F75aed7e5-4cc4-4fb0-8a6a-ce7fad9350f8_701x438.png" width="701" height="438" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/75aed7e5-4cc4-4fb0-8a6a-ce7fad9350f8_701x438.png&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:438,&quot;width&quot;:701,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:19329,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/png&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/208187883?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F75aed7e5-4cc4-4fb0-8a6a-ce7fad9350f8_701x438.png&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!058H!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F75aed7e5-4cc4-4fb0-8a6a-ce7fad9350f8_701x438.png 424w, /__u/substackcdn.com/image/fetch/$s_!058H!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F75aed7e5-4cc4-4fb0-8a6a-ce7fad9350f8_701x438.png 848w, /__u/substackcdn.com/image/fetch/$s_!058H!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F75aed7e5-4cc4-4fb0-8a6a-ce7fad9350f8_701x438.png 1272w, /__u/substackcdn.com/image/fetch/$s_!058H!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F75aed7e5-4cc4-4fb0-8a6a-ce7fad9350f8_701x438.png 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>That shape is the whole thing. The size of any single reading matters far less than whether the curve still rises and falls on schedule.</p><p>Two things happen to that curve after 50.</p><p>Estrogen and progesterone helped damp and shape the daily rhythm for about forty years. When they go, the curve flattens. The morning rise gets weaker. The evening descent gets slower. You end up mildly wired at bedtime and mildly flat at 9am, which is the opposite arrangement to the one you had at 35.</p><p>That is the female version, and it should be said plainly, because it is not everyone reading this.</p><p>The male version is quieter. Testosterone drifts down roughly 1% a year from your forties. No single event, no name for it, no appointment. Nobody hands you a diagnosis. You just notice you are tired at the wrong hours and irritable in a way you were not, and the afternoon has developed a hole in it.</p><p>Different hormone. The same broken shape.</p><p>And here is why the nine techniques land wrong. Every one of them is designed to bring a peak down. A flattened curve has no peak. Splashing cold water on a curve that has already gone flat gives you a pleasant thirty seconds and changes nothing about the shape.</p><h3>The nerve everyone keeps naming</h3><p>Four of the nine techniques work through the vagus nerve. Cold water, humming, the slow exhale, the sigh. The thread names it repeatedly and never explains it.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!0Qud!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5dc1a815-9081-486d-93a4-abed41c60ff6_1500x2054.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!0Qud!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5dc1a815-9081-486d-93a4-abed41c60ff6_1500x2054.webp 424w, /__u/substackcdn.com/image/fetch/$s_!0Qud!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5dc1a815-9081-486d-93a4-abed41c60ff6_1500x2054.webp 848w, /__u/substackcdn.com/image/fetch/$s_!0Qud!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5dc1a815-9081-486d-93a4-abed41c60ff6_1500x2054.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!0Qud!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5dc1a815-9081-486d-93a4-abed41c60ff6_1500x2054.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!0Qud!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5dc1a815-9081-486d-93a4-abed41c60ff6_1500x2054.webp" width="1456" height="1994" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/5dc1a815-9081-486d-93a4-abed41c60ff6_1500x2054.webp&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:1994,&quot;width&quot;:1456,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:192174,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/webp&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/208187883?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5dc1a815-9081-486d-93a4-abed41c60ff6_1500x2054.webp&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!0Qud!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5dc1a815-9081-486d-93a4-abed41c60ff6_1500x2054.webp 424w, /__u/substackcdn.com/image/fetch/$s_!0Qud!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5dc1a815-9081-486d-93a4-abed41c60ff6_1500x2054.webp 848w, /__u/substackcdn.com/image/fetch/$s_!0Qud!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5dc1a815-9081-486d-93a4-abed41c60ff6_1500x2054.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!0Qud!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5dc1a815-9081-486d-93a4-abed41c60ff6_1500x2054.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>The vagus nerve is the main cable of your parasympathetic system. It runs from your brainstem down through your throat, past your heart and lungs, and into your gut. When you hum, you vibrate the part of it that passes your voice box. When you exhale slowly, you lean on the branch that talks to your heart. Both are real. Both do something measurable.</p><p>Most of that cable is below your ribs, and most of the traffic on it runs upward, from your gut to your brain, rather than the other way round.</p><p>What your gut bacteria do to your mood and sleep needs its own article. Coach Dylan wrote that one. <a href="/__u/fitdadformula.substack.com/p/youre-not-fat-your-gut-is-starving">You&#8217;re not fat. Your gut is starving.</a> covers the 2021 Stanford trial where fermented foods raised microbiome diversity and a high-fibre diet barely moved it.</p><p>Back to the curve.</p><h3>The part of that symptom list that needs a doctor</h3><p>This is the section to read even if you skip the rest.</p><p>The thread lists loss of libido, joint pain, dark circles and muscle weakness, and calls them signs of high cortisol. All four can appear with disrupted cortisol. All four appear in a dozen other things.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!67V0!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5826b39f-b50a-477e-9f00-3dc330334024_2268x3024.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!67V0!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5826b39f-b50a-477e-9f00-3dc330334024_2268x3024.webp 424w, /__u/substackcdn.com/image/fetch/$s_!67V0!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5826b39f-b50a-477e-9f00-3dc330334024_2268x3024.webp 848w, /__u/substackcdn.com/image/fetch/$s_!67V0!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5826b39f-b50a-477e-9f00-3dc330334024_2268x3024.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!67V0!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5826b39f-b50a-477e-9f00-3dc330334024_2268x3024.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!67V0!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5826b39f-b50a-477e-9f00-3dc330334024_2268x3024.webp" width="1456" height="1941" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5826b39f-b50a-477e-9f00-3dc330334024_2268x3024.webp 424w, /__u/substackcdn.com/image/fetch/$s_!67V0!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5826b39f-b50a-477e-9f00-3dc330334024_2268x3024.webp 848w, /__u/substackcdn.com/image/fetch/$s_!67V0!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5826b39f-b50a-477e-9f00-3dc330334024_2268x3024.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!67V0!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F5826b39f-b50a-477e-9f00-3dc330334024_2268x3024.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Muscle weakness is a thyroid symptom. It is a vitamin D symptom. It is a statin symptom. It is the leading edge of the muscle loss that starts at 30 and speeds up after 50, which needs protein and resistance work rather than breathing.</p><p>Joint pain after menopause has a hormonal explanation that has nothing to do with stress.</p><p>Low libido is a hormone question in both sexes and a medication question in a lot of people over 50.</p><p>If you have muscle weakness, unexplained joint pain, or a libido change that arrived on its own, that is a conversation with your doctor and a blood panel. Not a breathing exercise. A thread that gathers four symptoms under one cause and hands you a self-help list is doing something a doctor is not allowed to do, and it is doing it without seeing you.</p><p>Ask for thyroid, vitamin D, and a discussion of anything you take daily. Then come back to the list below.</p><h3>The bill</h3><p>Consider what following the thread as written actually costs.</p><p>Nine techniques. If you do all of them the way it suggests, you are sighing every 60 to 90 seconds, rocking for one to three minutes, humming for one to two minutes, drawing your feelings, splashing your face, walking twenty minutes among trees, softening your gaze and monitoring your breathing.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!piYH!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F349b9812-416d-4399-a573-85c24227ef29_1080x2070.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!piYH!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F349b9812-416d-4399-a573-85c24227ef29_1080x2070.webp 424w, /__u/substackcdn.com/image/fetch/$s_!piYH!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F349b9812-416d-4399-a573-85c24227ef29_1080x2070.webp 848w, /__u/substackcdn.com/image/fetch/$s_!piYH!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F349b9812-416d-4399-a573-85c24227ef29_1080x2070.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!piYH!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F349b9812-416d-4399-a573-85c24227ef29_1080x2070.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>That is a part-time job in nervous system management.</p><p>Two weeks of that, then it stops, because it always stops. And what remains is the belief that you tried the stress thing and it did not work for you, which is the most expensive outcome on the page. The thread costs nothing to read and can cost you the correct explanation for the next four years.</p><h3>What nobody knows</h3><p>Three honest gaps, and the third one is mine.</p><p>Nobody has shown that lowering a cortisol reading changes how you age. Cortisol tracks with plenty of bad outcomes across populations. Whether pushing a number down on a Tuesday afternoon does anything for a person over a decade has never been established, and anyone selling you a fix for your &#8220;cortisol levels&#8221; is ahead of that evidence.</p><p>Nobody has run the trial that matters here. Take the nine techniques, apply them to postmenopausal women and to men over 55 with real hormonal drift, measure the daily curve rather than a single reading, and follow it for a year. That study does not exist. It should. The guidance below is built on the shape of the curve and on which techniques plausibly act on which part of it, and that is inference rather than proof, and I would rather say so than pretend.</p><p>The third gap is smaller. The thread says to sigh every 60 to 90 seconds. I do not know where that interval comes from. Nobody has tested 60 seconds against 5 minutes against once an hour, as far as I can find, and the number reads like something invented for the sake of having one.</p><p>Certainty is what the supplement industry sells.</p><h3>The strongest case against everything above</h3>
      <p>
          <a href="/__u/stayyoung.substack.com/p/all-nine-of-these-were-built-for">
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   ]]></content:encoded></item><item><title><![CDATA[They ran it again on 70-year-olds. Nobody quotes that one.]]></title><description><![CDATA[&#8220;Exercise reverses 20 years of heart aging.&#8221;]]></description><link>https://stayyoung.substack.com/p/they-ran-it-again-on-70-year-olds</link><guid isPermaLink="false">https://stayyoung.substack.com/p/they-ran-it-again-on-70-year-olds</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Tue, 21 Jul 2026 03:31:31 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!nXp8!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fab8c41d1-4d31-4f87-8264-131ff8cf3845_2287x1440.png" length="0" type="image/jpeg"/><content:encoded><![CDATA[<div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;4a39fcc0-ff40-4d77-bdee-feb2ec10273d&quot;,&quot;duration&quot;:null}"></div><p>&#8220;Exercise reverses 20 years of heart aging.&#8221;</p><p>That&#8217;s the line travelling around this week. It comes from a real trial, run by a serious cardiologist, published in Circulation.</p><p>Here&#8217;s the number nobody puts in the headline.</p><p><strong>Fifty-three.</strong></p><p>That&#8217;s the average age of the people in it. Sixty-one healthy, sedentary adults, 45 to 64 years old, two years of supervised training. Their maximum oxygen uptake rose 18%. The stiffness in the left ventricle &#8212; the heart&#8217;s main pumping chamber &#8212; improved by more than a quarter.</p><p><em>Source: Howden et al., Circulation, 2018. <a href="https://pubmed.ncbi.nlm.nih.gov/29311053/">https://pubmed.ncbi.nlm.nih.gov/29311053/</a></em></p><p>Real result. Excellent study. Not a single person in it was 70.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!nXp8!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fab8c41d1-4d31-4f87-8264-131ff8cf3845_2287x1440.png" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!nXp8!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fab8c41d1-4d31-4f87-8264-131ff8cf3845_2287x1440.png 424w, /__u/substackcdn.com/image/fetch/$s_!nXp8!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fab8c41d1-4d31-4f87-8264-131ff8cf3845_2287x1440.png 848w, /__u/substackcdn.com/image/fetch/$s_!nXp8!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fab8c41d1-4d31-4f87-8264-131ff8cf3845_2287x1440.png 1272w, /__u/substackcdn.com/image/fetch/$s_!nXp8!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fab8c41d1-4d31-4f87-8264-131ff8cf3845_2287x1440.png 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!nXp8!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fab8c41d1-4d31-4f87-8264-131ff8cf3845_2287x1440.png" width="1456" height="917" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/ab8c41d1-4d31-4f87-8264-131ff8cf3845_2287x1440.png&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:917,&quot;width&quot;:1456,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:353133,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/png&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:false,&quot;topImage&quot;:true,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/207755940?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fab8c41d1-4d31-4f87-8264-131ff8cf3845_2287x1440.png&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!nXp8!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fab8c41d1-4d31-4f87-8264-131ff8cf3845_2287x1440.png 424w, /__u/substackcdn.com/image/fetch/$s_!nXp8!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fab8c41d1-4d31-4f87-8264-131ff8cf3845_2287x1440.png 848w, /__u/substackcdn.com/image/fetch/$s_!nXp8!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fab8c41d1-4d31-4f87-8264-131ff8cf3845_2287x1440.png 1272w, /__u/substackcdn.com/image/fetch/$s_!nXp8!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fab8c41d1-4d31-4f87-8264-131ff8cf3845_2287x1440.png 1456w" sizes="100vw" fetchpriority="high"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><h3>The second study exists. It just doesn&#8217;t trend.</h3><p>Eight years earlier, the same lab ran the older version.</p><p>Sedentary people over 65. One year of progressive, vigorous endurance training. Same invasive measurements, same team.</p><p><strong>Nine people finished it. Average age 70.6.</strong></p><p>Their fitness improved. Their arteries got more compliant. But the left ventricular stiffness &#8212; the specific thing the 2018 headline is about &#8212; barely moved.</p><p><em>Source: Fujimoto et al., Circulation, 2010. <a href="https://pubmed.ncbi.nlm.nih.gov/20956208/">https://pubmed.ncbi.nlm.nih.gov/20956208/</a></em></p><p>So the honest version of that headline is longer and worse: <em>two years of hard training may reverse a substantial amount of heart stiffening, if you start in your fifties. Start in your seventies and the evidence, such as it is, says something different happens.</em></p><p>Nobody makes a thumbnail out of that.</p><h3>What&#8217;s actually stiffening</h3><p>Your heart has to do two things. Squeeze, and then relax enough to refill.</p><p>The squeeze holds up well with age. The refill doesn&#8217;t.</p><p>Sitting still for decades lets the muscle of the left ventricle gradually go from supple to leathery. A stiff chamber doesn&#8217;t fill properly. Pressure backs up behind it. That&#8217;s the mechanism behind the most common form of heart failure in people over 60 &#8212; the kind where the pump still works but the filling doesn&#8217;t.</p><p>Lifelong exercisers largely don&#8217;t develop it. That&#8217;s been known for twenty years. The open question was always whether you could undo it after the fact.</p><p>At 53, apparently yes, substantially.</p><p>At 70, on the evidence we have &#8212; nine people, one year &#8212; apparently not the same way.</p><p>That&#8217;s not a reason to stop reading. It&#8217;s a reason to change what you&#8217;re aiming at, and I&#8217;ll come back to that, because the second half of that older study is the part that actually matters to you.</p><h3>The American Heart Association says 150 minutes a week</h3><p>That&#8217;s the public number. Two and a half hours. Most people over 50 who exercise at all are aiming at it.</p><p>Levine&#8217;s trial didn&#8217;t use 150 minutes. It used four to five sessions a week, for two years, including genuine high-intensity intervals, supervised, with one long session and dedicated recovery days built in.</p><p>And his lab&#8217;s earlier work on lifelong exercisers found something the guideline flattens completely: people who trained two to three times a week did not end up with the same heart as people who trained four to five times a week. Same activity. Different dose. Different organ.</p><p>So 150 minutes is not wrong. It&#8217;s just not the number that does <em>this</em>.</p><p>It was set as a floor for public health &#8212; the minimum below which risk climbs steeply across an entire population. It was never a prescription for remodelling a fifty-year-old heart, and it has been read as one for twenty years.</p><p>Attack the number, not the institution. The AHA figure has probably saved more lives than any cardiac drug. It&#8217;s a floor being sold as a target.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!grJk!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F8ec16e94-54fe-4b2b-8e97-753f6e931d1f_4032x3024.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!grJk!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F8ec16e94-54fe-4b2b-8e97-753f6e931d1f_4032x3024.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!grJk!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F8ec16e94-54fe-4b2b-8e97-753f6e931d1f_4032x3024.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!grJk!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F8ec16e94-54fe-4b2b-8e97-753f6e931d1f_4032x3024.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!grJk!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F8ec16e94-54fe-4b2b-8e97-753f6e931d1f_4032x3024.jpeg 1456w" sizes="100vw"><img 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/__u/substackcdn.com/image/fetch/$s_!grJk!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F8ec16e94-54fe-4b2b-8e97-753f6e931d1f_4032x3024.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><h3>Three weeks</h3><p>That&#8217;s the other half of the story, and it&#8217;s the part that should frighten you slightly.</p><p>In 1966, five healthy 20-year-old men were put on three weeks of bed rest. Their fitness collapsed. Thirty years later, the same men were retested &#8212; and three weeks flat on their backs at 20 had cost them more aerobic capacity than three decades of aging.</p><p>Read that with your own body in mind. A hip replacement. A bad flu. A winter where the walking stopped.</p><p>Deconditioning is faster than aging, and it doesn&#8217;t wait for you to be old.</p><p><em>Note the sample, though: five men, in their twenties, sixty years ago. It&#8217;s a famous finding and a tiny, young, all-male one. We repeat it because it&#8217;s directionally true and because nobody has run it properly on a 62-year-old, which is its own indictment.</em></p><h3>What nobody knows, including the people quoting this</h3><p>Three honest gaps.</p><p><strong>One:</strong> the over-65 study had nine participants. Nine. You cannot conclude much from nine people, in either direction. The correct reading isn&#8217;t &#8220;it&#8217;s too late&#8221; &#8212; it&#8217;s &#8220;almost nobody has looked.&#8221;</p><p><strong>Two:</strong> high-intensity exercisers sometimes show <em>higher</em> coronary artery calcium scores than sedentary people, while having lower event rates. The leading explanation is that the plaque they form is more stable. That&#8217;s a plausible story. It is not settled, and anyone telling you confidently what your calcium score means in the context of your training is ahead of the evidence.</p><p><strong>Three:</strong> the endurance dose at which atrial fibrillation risk starts to rise in an older, previously sedentary person has never been established. It rises in lifelong high-volume endurance athletes. Where the line sits for a 61-year-old starting from the sofa, nobody knows. I don&#8217;t know either, and I&#8217;d rather say that than pick a number.</p><p>Certainty is what the supplement industry sells. This is cardiology, and the honest people in it hedge.</p><h3>The strongest case against everything above</h3><p>Two arguments, and both are good.</p><p>The first: I&#8217;ve made a lot of the 2010 study, and it had nine completers and lasted one year, against 53 completers and two years in the 2018 trial. If you handed a cardiologist those two papers and asked which one is underpowered, they&#8217;d point at mine. A one-year intervention may simply be too short for a seventy-year-old ventricle. Absence of evidence, and all that.</p><p>The second, and this one is more important: <strong>Levine ran both studies.</strong> He funded, published and presented the disappointing one himself. That&#8217;s the opposite of hype. Whatever&#8217;s wrong with how this research is being repackaged on podcasts, it isn&#8217;t the researcher&#8217;s doing &#8212; he put the inconvenient result in the literature where anyone could find it, and I found it by reading his own reference list.</p><p>Concede all of that.</p><p>The correction still holds. Because the sentence in circulation right now is &#8220;exercise reverses 20 years of heart aging,&#8221; full stop, and it is being read by people who were not in that trial and cannot know that a version of it exists with their age on it. The research is honest. The headline isn&#8217;t.</p><h3>What I got wrong reading this</h3><p>I read the 2018 trial first and got excited like everyone else. The 2010 study is reference number nine in that same paper. Nine. It was sitting in the bibliography the entire time and I went to the press release instead.</p><p>That&#8217;s how this works. The good news travels as a sentence. The qualifying study travels as a footnote.</p><p>Three things you can do this week, free, before any of the numbers:</p><p>&#8594; <strong>Get cleared before you go hard.</strong> This is the one part of this post that isn&#8217;t optional. If you&#8217;re over 50, sedentary, or have any cardiac history, high-intensity intervals are a conversation with your doctor first. Not a suggestion from a newsletter.</p><p>&#8594; <strong>Protect the floor.</strong> The bed-rest finding isn&#8217;t about training, it&#8217;s about stopping. If you&#8217;re facing surgery, illness, or a bad winter, the priority isn&#8217;t intensity &#8212; it&#8217;s not going to zero. Something daily beats something perfect.</p><p>&#8594; <strong>Count your sessions, not your minutes.</strong> For one week, just write down how many separate days you did something aerobic. Not duration. Days. That single number is the one that separated the compliant hearts from the stiff ones in this lab&#8217;s data, and almost nobody tracks it.</p><p>Useful. But not the dose.</p><p>The exact session structure Levine&#8217;s trial used. Where the risk actually sits. What the 70-year-old data says you should be aiming at <em>instead</em> &#8212; because it isn&#8217;t nothing, and the second half of that study is genuinely good news that nobody reported.</p><p><strong>The rest of this post is for paid members.</strong></p><p>the weekly structure the trial actually used, the safety ceiling before you touch intensity, the different target for a body past 65, and the one common training pattern to stop this week.</p><p>Science-backed habits that actually fit your life.</p><h3>Safety before dose. That&#8217;s the reorder.</h3><p>The episode this came from runs in the order the research happened: damage, reversal, dose, risk, recovery.</p><p>That order is fine for a cardiologist and wrong for you, because it hands a previously sedentary sixty-something an intensity prescription and then, four points later, mentions where it gets dangerous &#8212; which is exactly backwards for a reader whose most rational fear is not aging but injury.</p><h3><strong>Floor &#8594; Ceiling &#8594; Dose &#8594; Recovery &#8594; Deletion.</strong></h3><h4>1. THE FLOOR &#8212; the non-negotiable, and it isn&#8217;t training</h4>
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   ]]></content:encoded></item><item><title><![CDATA[The rat drank the water. You are not the rat.]]></title><description><![CDATA[&#8220;You&#8217;ve been lied to about why you&#8217;re aging.]]></description><link>https://stayyoung.substack.com/p/the-rat-drank-the-water-you-are-not</link><guid isPermaLink="false">https://stayyoung.substack.com/p/the-rat-drank-the-water-you-are-not</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Fri, 17 Jul 2026 08:06:03 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!L1FB!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fe24d8fc9-53bf-4f81-b28b-357a2f160b68_480x638.jpeg" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>&#8220;You&#8217;ve been lied to about why you&#8217;re aging. It&#8217;s not genetics, stress, or diet. It&#8217;s this molecule.&#8221;</p><p>Then six reasons. Then a machine to buy.</p><p>Stop at the first sentence.</p><p>Anything that opens by telling you the cause of aging is <em>one thing you haven&#8217;t heard of yet</em> is running the oldest script in the wellness business. It&#8217;s the resveratrol script. The NAD script. The alkaline-water script. Each one had a molecule, a scientist, and a product, in that order.</p><p>The molecule this week is hydrogen. The scientist is real. The studies are real.</p><p>The problem is who they were run on.</p><h3>Reason 4 was a rat</h3><p>The thread&#8217;s fourth reason is cognitive improvement. Sharper thinking. Protected neurons.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;d603d460-103c-4232-a359-143dddc688a8&quot;,&quot;duration&quot;:null}"></div><p>Read the actual line: <em>&#8220;In studies with rats.&#8221;</em></p><p>Then read the summary at the bottom: <em>&#8220;Sharper cognition.&#8221;</em> For you.</p><p>That&#8217;s the move. The evidence was collected in a rodent, and the promise was delivered to a 58-year-old woman reading on her phone at 11pm. Somewhere between reason 4 and the TLDR, the rat quietly turned into you.</p><p>There is no trial showing hydrogen water sharpens cognition in a human being over 50. Not one. There may be one someday &#8212; the mechanism isn&#8217;t stupid. But right now, the sharpest-cognition claim in that thread has whiskers.</p><h3>Reason 3 was a 20-year-old athlete</h3><p>The exercise claim comes from a study of elite soccer players. Higher force output. Lower lactate.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;7bb84d49-b3cc-45c5-9c32-6df791b92cd5&quot;,&quot;duration&quot;:null}"></div><p>Elite soccer players are, on average, in their early twenties, with the recovery capacity and hormone profile to match. Whatever hydrogen did in their bodies, it did in the exact body type that every piece of health advice has already been tested on for fifty years &#8212; young, fit, mostly male.</p><p>The one population this molecule keeps getting studied in is the one population that needs it least.</p><p>Which is the whole reason this newsletter exists. The question is never &#8220;did it work.&#8221; The question is &#8220;who was in the room.&#8221; And in reason 3, it was a 22-year-old doing shuttle runs.</p><h3>And this is where it starts to matter for you</h3><p>Because there&#8217;s a version of this that&#8217;s honest, and the thread skipped it to sell the exciting one.</p><p>Some of the human evidence is real. A 2025 meta-analysis pooled 13 randomised trials &#8212; 757 people &#8212; and found hydrogen-rich water lowered total cholesterol by about <strong>6.7 mg/dL</strong>.</p><p><em>Source: HRW and lipid profiles meta-analysis &#8212; Diabetology &amp; Metabolic Syndrome, 2026. <a href="https://link.springer.com/article/10.1186/s13098-026-02124-0">https://link.springer.com/article/10.1186/s13098-026-02124-0</a></em></p><p>That&#8217;s a genuine effect. It&#8217;s also small. For scale: a standard statin drops LDL cholesterol several times harder, and a serious change to what&#8217;s on your plate can move it further than either.</p><p>6.7 mg/dL is the real number. The thread doesn&#8217;t mention it once &#8212; because a real number that modest doesn&#8217;t sell a &#8364;400 machine. &#8220;Improved every marker of metabolic syndrome&#8221; does.</p><h3>Who ran the study that proves the product?</h3><p>Reason 2 is the metabolic-syndrome result. Weight, HbA1c, cholesterol, inflammation &#8212; all improved, the thread says, with no diet change.</p><p>That trial is real. It ran for 24 weeks. It&#8217;s the strongest human evidence in the whole thread.</p><p>It was also led by Tyler LeBaron.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;c35b4927-e787-47e3-b267-a335bc122884&quot;,&quot;duration&quot;:null}"></div><p>The same person the thread presents as the neutral expert who &#8220;spent 20 years studying the molecule.&#8221; He didn&#8217;t just study it &#8212; he researches it, advocates for it, and is embedded in the field that sells it. That doesn&#8217;t make the trial fake. Industry-adjacent researchers run good studies all the time.</p><p>But when the person explaining the molecule, the person who ran the trial, and the reason you&#8217;re being shown a product are the same person, you are allowed to want a second lab to check the work before you spend anything.</p><p>Attack the setup, not the man. His research may hold up. &#8220;A scientist studied this for 20 years&#8221; is not the same sentence as &#8220;an independent scientist studied this,&#8221; and the thread is built on you not noticing the missing word.</p><h3>What we don&#8217;t know, and what we got wrong</h3><p>Here&#8217;s the honest ledger.</p><p>We don&#8217;t know if any of this does a single thing for aging. Every real result in that thread is a <em>marker</em> &#8212; cholesterol, a blood sugar reading, an inflammation number. Not one is a hard outcome. Nobody has shown hydrogen water helps a person over 50 live longer, stay stronger, or keep their mind. The mechanism is plausible. The proof isn&#8217;t there yet, and plausible is not proof.</p><p>And we&#8217;ll own our side of it: this newsletter has, in the past, gotten excited about a molecule on the strength of a mechanism and a good story. Everyone in this space has. The tell we&#8217;ve learned to watch for is exactly the one in that opening line &#8212; <em>&#8220;it&#8217;s not genetics, stress, or diet.&#8221;</em> The moment someone waves away the three things that actually run your biology to sell you a fourth, close the tab.</p><p>Certainty is what the supplement industry sells. A 6.7 number with a shrug attached is what honesty sounds like.</p><h3>The strongest case for the water</h3><p>Now the other side, because it deserves one.</p><p>Hydrogen water appears to be safe. Across the trials, side effects are essentially absent &#8212; that part of the thread is roughly true. The lipid and glucose effects, while small, keep showing up across multiple independent trials, not just LeBaron&#8217;s, which is more than most wellness products can say. And the selective-antioxidant idea &#8212; that it may mop up the most damaging free radicals while leaving the useful ones alone &#8212; is a genuinely interesting piece of biology, not marketing fiction.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!L1FB!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fe24d8fc9-53bf-4f81-b28b-357a2f160b68_480x638.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!L1FB!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fe24d8fc9-53bf-4f81-b28b-357a2f160b68_480x638.jpeg 424w, 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/__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fe24d8fc9-53bf-4f81-b28b-357a2f160b68_480x638.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!L1FB!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fe24d8fc9-53bf-4f81-b28b-357a2f160b68_480x638.jpeg" width="480" height="638" 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/__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fe24d8fc9-53bf-4f81-b28b-357a2f160b68_480x638.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>If you already own the machine and you enjoy it, there&#8217;s no reason to stop. It&#8217;s water. It&#8217;s not hurting you, and it might be nudging a couple of markers in the right direction.</p><p>The correction isn&#8217;t &#8220;it&#8217;s a scam.&#8221;</p><p>The correction is: <strong>it&#8217;s a small, unproven, possibly-helpful extra &#8212; sold to you as the cause of your aging and the secret to reversing it.</strong> The water might be fine. The story attached to it is the problem.</p><h3>What actually moves those markers &#8212; free, tonight</h3><p>Every marker that thread promises to fix &#8212; cholesterol, blood sugar, inflammation, energy &#8212; has a lever with far more evidence behind it than hydrogen. None of them cost &#8364;400.</p><p>&#8594; <strong>Walk 10&#8211;15 minutes after your largest meal.</strong> This moves blood sugar more reliably than anything you can drink. Start tonight, after dinner.</p><p>&#8594; <strong>Get 25&#8211;35g of protein into breakfast.</strong> Not for the markers &#8212; for the muscle you&#8217;re quietly losing, which is the real metabolic engine after 50. The water does nothing for this. Nothing does, except protein and load.</p><p>&#8594; <strong>Ten minutes of morning daylight, outdoors.</strong> For the sleep and the energy the thread&#8217;s reason 6 is really about. Free, and better evidenced than &#8220;hydrogen matched caffeine.&#8221;</p><p>Useful. But not the protocol.</p><p>The exact protein numbers for your body. The one blood marker worth actually tracking before you spend money on anything &#8212; water, supplement, or machine. And the three-question test for whether <em>any</em> wellness product is worth your money, so the next &#8220;you&#8217;ve been lied to&#8221; thread doesn&#8217;t cost you a cent.</p><p>your real protein numbers, the single marker worth tracking before you buy anything, and the three-question filter that tells you in ten seconds whether a wellness product is science or a story.</p><p>The three-question test comes first</p><p>One question before you go.</p><p>Not which reason nearly got you. This one:</p><p><strong>What&#8217;s sitting in your cupboard right now that you&#8217;re not sure is doing anything?</strong></p><p>The supplement someone convincing sold you. The powder you bought on a good thread. The machine, the drops, the &#8220;clinically studied&#8221; thing you take because stopping feels like giving up.</p><p>Reply to this email, or drop it in the comments, with one line &#8212; what it is, and whether you actually feel a difference.</p><p>No judgement. I&#8217;ve got two of those myself, and I ran that hydrogen thread through three times before I spotted the rat.</p><p>I read every reply. If it&#8217;s junk, I&#8217;ll tell you straight. If it&#8217;s one of the few worth keeping, I&#8217;ll tell you that too.</p><p>One line is enough.</p><p>One question before you go.</p><p>Not which reason nearly got you. This one:</p><p>What&#8217;s sitting in your cupboard right now that you&#8217;re not sure is doing anything?</p><p>The supplement someone convincing sold you. The powder you bought on a good thread. The machine, the drops, the &#8220;clinically studied&#8221; thing you take because stopping feels like giving up.</p><p>Reply to this email, or drop it in the comments, with one line &#8212; what it is, and whether you actually feel a difference.</p><p>No judgement. I&#8217;ve got two of those myself, and I ran that hydrogen thread through three times before I spotted the rat.</p><p>I read every reply. If it&#8217;s junk, I&#8217;ll tell you straight. If it&#8217;s one of the few worth keeping, I&#8217;ll tell you that too.</p><p>One line is enough.</p><div class="directMessage button" data-attrs="{&quot;userId&quot;:364343734,&quot;userName&quot;:&quot;Stay Young&quot;,&quot;canDm&quot;:null,&quot;dmUpgradeOptions&quot;:null,&quot;isEditorNode&quot;:true}" data-component-name="DirectMessageToDOM"></div><p>The thread gave you six reasons to buy. Here&#8217;s the order that protects you instead.</p><h2><strong>Filter &#8594; Track &#8594; Feed &#8594; Move.</strong></h2><h4>1. THE FILTER &#8212; three questions, ten seconds, any product</h4><p>Before you spend a cent on any pill, powder, or machine, ask:</p><p>&#8594; <strong>Who was it tested on?</strong> If the answer is rats, or elite athletes, or &#8220;3,000 studies&#8221; with no human trial named &#8212; it wasn&#8217;t tested on you. Put it down<br>&#8594; <strong>Who ran the study?</strong> If the expert explaining it also researches it, sells it, or is paid by the field that sells it &#8212; you need a second, independent trial before you believe the first<br>&#8594; <strong>Is the result a marker or an outcome?</strong> &#8220;Improved cholesterol by 6 points&#8221; is a marker. &#8220;People lived longer / stayed stronger&#8221; is an outcome. Almost every wellness product has markers and no outcomes. That gap is the whole game</p><p>Three questions. The hydrogen thread fails all three. Most of them do.</p>
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   ]]></content:encoded></item><item><title><![CDATA[His $30,000 routine skips the part you need most]]></title><description><![CDATA[&#8220;He&#8217;s 62 with the DNA of a 38-year-old.]]></description><link>https://stayyoung.substack.com/p/his-30000-routine-skips-the-part</link><guid isPermaLink="false">https://stayyoung.substack.com/p/his-30000-routine-skips-the-part</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Mon, 13 Jul 2026 13:31:31 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!-xxo!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcaeb2759-8f66-4a70-a7c5-1c24dd1e1ef7_900x613.webp" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>&#8220;He&#8217;s 62 with the DNA of a 38-year-old. He spends 98.5% less than Bryan Johnson. Here&#8217;s the breakdown.&#8221;</p><p>Then seven numbered sections. Exercise. Nutrition. Supplements. Sleep. Therapies. Stress. Cost.</p><p>Copy it. That&#8217;s the rule</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!-xxo!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcaeb2759-8f66-4a70-a7c5-1c24dd1e1ef7_900x613.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!-xxo!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcaeb2759-8f66-4a70-a7c5-1c24dd1e1ef7_900x613.webp 424w, /__u/substackcdn.com/image/fetch/$s_!-xxo!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcaeb2759-8f66-4a70-a7c5-1c24dd1e1ef7_900x613.webp 848w, /__u/substackcdn.com/image/fetch/$s_!-xxo!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcaeb2759-8f66-4a70-a7c5-1c24dd1e1ef7_900x613.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!-xxo!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcaeb2759-8f66-4a70-a7c5-1c24dd1e1ef7_900x613.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!-xxo!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcaeb2759-8f66-4a70-a7c5-1c24dd1e1ef7_900x613.webp" width="900" height="613" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcaeb2759-8f66-4a70-a7c5-1c24dd1e1ef7_900x613.webp 424w, /__u/substackcdn.com/image/fetch/$s_!-xxo!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcaeb2759-8f66-4a70-a7c5-1c24dd1e1ef7_900x613.webp 848w, /__u/substackcdn.com/image/fetch/$s_!-xxo!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcaeb2759-8f66-4a70-a7c5-1c24dd1e1ef7_900x613.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!-xxo!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcaeb2759-8f66-4a70-a7c5-1c24dd1e1ef7_900x613.webp 1456w" sizes="100vw" fetchpriority="high"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>.</p><p>One man. Sixty-two. Male. Testosterone: still there. Estrogen: never lost, because he never had it to lose.</p><p>No control group. Not even a version of himself who did nothing for a year and got measured anyway.</p><p>$30,000 a year. That&#8217;s $82 a day, every day, on a protocol with a sample size of one.</p><p>What&#8217;s in section 6?</p><p>Nothing.</p><p>Section 6 is Stress Management. In the original breakdown it reads, in full: <em>&#8220;specific list appears in accompanying image, not detailed in text posts.&#8221;</em></p><p>That&#8217;s it. That&#8217;s the section.</p><p>The supplements got 150 items and a paragraph on beef liver. The therapies got a hyperbaric chamber. Stress &#8212; the one system that is measurably, mechanically different in a body over 50, the one thing that actually decides whether the other six sections do anything at all &#8212; got a footnote pointing at a picture nobody attached.</p><p>And here&#8217;s the thing that should bother you: that&#8217;s not laziness on his part, it&#8217;s what happens when the thing being copied is a <em>look</em>, because cortisol doesn&#8217;t photograph, and a hyperbaric chamber does, and the entire economy of this content runs on what fits in a frame.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!ZHIr!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7b0a0668-0ebc-4481-a3ff-c04fdb929f80_680x406.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!ZHIr!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7b0a0668-0ebc-4481-a3ff-c04fdb929f80_680x406.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!ZHIr!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7b0a0668-0ebc-4481-a3ff-c04fdb929f80_680x406.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!ZHIr!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7b0a0668-0ebc-4481-a3ff-c04fdb929f80_680x406.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!ZHIr!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7b0a0668-0ebc-4481-a3ff-c04fdb929f80_680x406.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!ZHIr!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7b0a0668-0ebc-4481-a3ff-c04fdb929f80_680x406.jpeg" width="680" height="406" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7b0a0668-0ebc-4481-a3ff-c04fdb929f80_680x406.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!ZHIr!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7b0a0668-0ebc-4481-a3ff-c04fdb929f80_680x406.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!ZHIr!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7b0a0668-0ebc-4481-a3ff-c04fdb929f80_680x406.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!ZHIr!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7b0a0668-0ebc-4481-a3ff-c04fdb929f80_680x406.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><h3>And this is where the copying starts to cost you</h3><p>Two things are running in your body that were not running in his experiment.</p><p><strong>Your stress hormone doesn&#8217;t clock off anymore.</strong></p><p>Cortisol is your stress hormone. It&#8217;s meant to spike in the morning and fall through the day.</p><p>Estrogen and progesterone were part of what damped that curve. When they go, the curve flattens and drags. That&#8217;s the 3am wake-up. That&#8217;s the belly fat that arrives even though nothing about your eating changed. That&#8217;s the reason a hard workout that used to leave you energised now leaves you flat for two days.</p><p>If you&#8217;re male, that exact mechanism isn&#8217;t yours. Yours is quieter &#8212; testosterone drifting down about 1% a year from your forties. No single event. No name for it. No appointment.</p><p>Nobody hands you a diagnosis. You just notice the same weights feel heavier and the same dinner sits differently.</p><p>Different hormone. Same problem. <strong>His protocol was validated on a body that still had all of it.</strong></p><p><strong>And your muscle has gone slightly deaf to protein.</strong></p><p>The term is anabolic resistance. Plain English: the protein that built muscle at 30 now knocks quietly and gets no answer. The signal has to be louder to register at all.</p><p>The PROT-AGE expert group reviewed the evidence and concluded that older adults need more dietary protein than younger adults. Not the same. More.</p><p><em>Source: PROT-AGE Study Group &#8212; J Am Med Dir Assoc, 2013. <a href="https://pubmed.ncbi.nlm.nih.gov/23867520/">https://pubmed.ncbi.nlm.nih.gov/23867520/</a></em></p><p>Now look at his breakfast. Green banana. Chia seeds. Berries. Spices. Almond milk.</p><p>Protein: close to nothing.</p><p>On a 62-year-old man with testosterone still doing maintenance in the background, that&#8217;s survivable. Not optimal. Survivable.</p><p>On your body it&#8217;s a slow subtraction, repeated 365 times a year.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!YJ0O!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd738a1fc-addc-4f9d-b2d7-969de696641d_1200x1800.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!YJ0O!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd738a1fc-addc-4f9d-b2d7-969de696641d_1200x1800.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!YJ0O!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd738a1fc-addc-4f9d-b2d7-969de696641d_1200x1800.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!YJ0O!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd738a1fc-addc-4f9d-b2d7-969de696641d_1200x1800.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!YJ0O!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd738a1fc-addc-4f9d-b2d7-969de696641d_1200x1800.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!YJ0O!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd738a1fc-addc-4f9d-b2d7-969de696641d_1200x1800.jpeg" width="1200" height="1800" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/d738a1fc-addc-4f9d-b2d7-969de696641d_1200x1800.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:1800,&quot;width&quot;:1200,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:209863,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/206824770?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd738a1fc-addc-4f9d-b2d7-969de696641d_1200x1800.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!YJ0O!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd738a1fc-addc-4f9d-b2d7-969de696641d_1200x1800.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!YJ0O!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd738a1fc-addc-4f9d-b2d7-969de696641d_1200x1800.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!YJ0O!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd738a1fc-addc-4f9d-b2d7-969de696641d_1200x1800.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!YJ0O!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd738a1fc-addc-4f9d-b2d7-969de696641d_1200x1800.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><h3>Bryan Johnson&#8217;s Blueprint runs on about 2,000 calories a day</h3><p>He&#8217;s the benchmark in that thread. &#8220;98.5% cheaper than Bryan Johnson&#8221; only means something if Johnson is the standard.</p><p>So let&#8217;s take his claim seriously, because he deserves that. Johnson publishes his protocol and his markers openly, for free, which almost nobody in this industry does. Credit where it&#8217;s due.</p><p>But his Blueprint is built on restriction &#8212; a lean, plant-forward, calorie-controlled diet, designed by and for a man in his forties with intact testosterone and elite recovery.</p><p>Now look at what restriction does to a body that isn&#8217;t his.</p><p>CALERIE was a two-year randomised trial: 218 healthy, non-obese adults, 25% calorie restriction. Bone mineral density fell at the lumbar spine, the total hip and the femoral neck.</p><p><em>Source: Villareal et al. &#8212; J Bone Miner Res, 2016. <a href="https://pubmed.ncbi.nlm.nih.gov/26332798/">https://pubmed.ncbi.nlm.nih.gov/26332798/</a></em></p><p>The average age of those participants was <strong>37.9</strong>.</p><p>Read that again next to the headline. The DNA of a 38-year-old. Thirty-eight is also, roughly, the age of the people we tested restriction on. Bone loss showed up in <em>them</em> &#8212; in bodies with a decade or two of hormonal cushion still in the bank.</p><p>Yours doesn&#8217;t have that cushion.</p><p>Attack the protocol, not the man. Johnson&#8217;s numbers are his. They were never yours, and being 98.5% cheaper than an untested protocol doesn&#8217;t make the cheaper one tested.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!y4QD!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcd4921a4-113e-477a-82c7-9555e47c75a8_1080x526.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!y4QD!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcd4921a4-113e-477a-82c7-9555e47c75a8_1080x526.webp 424w, /__u/substackcdn.com/image/fetch/$s_!y4QD!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcd4921a4-113e-477a-82c7-9555e47c75a8_1080x526.webp 848w, /__u/substackcdn.com/image/fetch/$s_!y4QD!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcd4921a4-113e-477a-82c7-9555e47c75a8_1080x526.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!y4QD!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcd4921a4-113e-477a-82c7-9555e47c75a8_1080x526.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!y4QD!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcd4921a4-113e-477a-82c7-9555e47c75a8_1080x526.webp" width="1080" height="526" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcd4921a4-113e-477a-82c7-9555e47c75a8_1080x526.webp 424w, /__u/substackcdn.com/image/fetch/$s_!y4QD!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcd4921a4-113e-477a-82c7-9555e47c75a8_1080x526.webp 848w, /__u/substackcdn.com/image/fetch/$s_!y4QD!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcd4921a4-113e-477a-82c7-9555e47c75a8_1080x526.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!y4QD!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcd4921a4-113e-477a-82c7-9555e47c75a8_1080x526.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 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href="/__u/substackcdn.com/image/fetch/$s_!_Voc!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd0a63d55-1a86-4051-870e-da71de1eb4d6_1080x597.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!_Voc!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd0a63d55-1a86-4051-870e-da71de1eb4d6_1080x597.webp 424w, /__u/substackcdn.com/image/fetch/$s_!_Voc!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd0a63d55-1a86-4051-870e-da71de1eb4d6_1080x597.webp 424w, /__u/substackcdn.com/image/fetch/$s_!_Voc!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd0a63d55-1a86-4051-870e-da71de1eb4d6_1080x597.webp 848w, /__u/substackcdn.com/image/fetch/$s_!_Voc!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd0a63d55-1a86-4051-870e-da71de1eb4d6_1080x597.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!_Voc!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd0a63d55-1a86-4051-870e-da71de1eb4d6_1080x597.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><h3>Do the arithmetic</h3><p>$30,000 a year. $82 a day. 150 capsules, swallowed daily, sorted weekly.</p><p>Forty minutes of mat, trampoline, floor stretches, inversion table and foam roller before he starts the actual work. Then bike sprints, a run, P90X, core. Then sauna. Then hyperbaric.</p><p>Two hours a day. Roughly 700 hours a year.</p><p>The two interventions with the strongest evidence for a body over 50 &#8212; loading your skeleton and eating enough protein &#8212; take about four hours a week and cost the price of food.</p><p>You&#8217;re being sold the 700 hours and the $30,000.</p><p>The four hours are free, and nobody films them.</p><h3>There is no trial behind any of this</h3><p>Nobody has shown that lowering an epigenetic age score makes you live longer.</p><p>The clocks were built to predict mortality across large populations, not to be steered by one person, year after year. There&#8217;s no trial proving a lower score is a better life rather than simply a better score &#8212; and that distinction is doing an enormous amount of quiet work in every video made about this man.</p><p>And the number this whole post turns on &#8212; the exact protein target for a 58-year-old on HRT lifting twice a week, or a 60-year-old man on TRT doing the same &#8212; doesn&#8217;t exist. There should be a trial. There isn&#8217;t.</p><p>Same for section 6, by the way. There&#8217;s no clean trial of his stress routine either. There&#8217;s no clean trial of anyone&#8217;s. We&#8217;re all working from mechanism and inference, and the honest ones say so.</p><p>What follows is a better estimate than what you&#8217;re doing now.</p><p>It isn&#8217;t certainty. Certainty is what the supplement industry sells.</p><h3>He&#8217;s right about more than we&#8217;d like</h3><p>Say it before anyone else does.</p><p>He isn&#8217;t running a trial. He&#8217;s running his life, and he never claimed otherwise. The boring 20% of that routine &#8212; daily movement, whole foods, eight hours of sleep, few simple carbs, resistance work, tinned sardines, organ meat instead of a multivitamin &#8212; is the best-evidenced set of habits in geroscience. It works in bodies over 50. It works in yours.</p><p>And the thread&#8217;s own conclusion is correct: the key is consistency. It is. That part is true and we&#8217;re not going to pretend otherwise.</p><p>Attack the magnetic mat too hard and someone throws away the walk with it.</p><p>The correction holds anyway.</p><p>Because consistency with the wrong instruction is just an expensive way to be wrong for longer. You&#8217;ll buy the mat and keep the fruit breakfast. You&#8217;ll foam roll for fifteen minutes and never load a barbell. You&#8217;ll be <em>consistent</em> &#8212; for four years &#8212; and then wonder why the scan came back the way it did.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!CzQy!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F743d7ea3-6e03-41d5-9006-d2bdb457da2f_680x437.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!CzQy!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F743d7ea3-6e03-41d5-9006-d2bdb457da2f_680x437.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!CzQy!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F743d7ea3-6e03-41d5-9006-d2bdb457da2f_680x437.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!CzQy!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F743d7ea3-6e03-41d5-9006-d2bdb457da2f_680x437.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!CzQy!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F743d7ea3-6e03-41d5-9006-d2bdb457da2f_680x437.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!CzQy!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F743d7ea3-6e03-41d5-9006-d2bdb457da2f_680x437.jpeg" width="680" height="437" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F743d7ea3-6e03-41d5-9006-d2bdb457da2f_680x437.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!CzQy!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F743d7ea3-6e03-41d5-9006-d2bdb457da2f_680x437.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!CzQy!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F743d7ea3-6e03-41d5-9006-d2bdb457da2f_680x437.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!CzQy!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F743d7ea3-6e03-41d5-9006-d2bdb457da2f_680x437.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><h3>Here&#8217;s what we got wrong reading this</h3><p>We read that thread three times before noticing section 6 was blank.</p><p>Three times. It was right there. We were busy being clever about the supplements.</p><p>That&#8217;s the whole problem in miniature &#8212; the loud part takes the attention, the empty part takes the years. We&#8217;re not above it either.</p><p>Three corrections you can make tonight. Free. No equipment.</p><p>&#8594; <strong>Walk after eating, not on an inversion table.</strong> His stated goal is glucose and insulin regulation. A short walk after a meal is the version of that goal with the evidence behind it, and it costs nothing.</p><p>&#8594; <strong>Stop counting mobility as training.</strong> Stretching, trampolining and foam rolling feel like exercise. They send no signal to bone or muscle. Keep them if you enjoy them. Just stop letting them occupy the slot where loading belongs.</p><p>&#8594; <strong>Write your own section 6.</strong> Not a routine. One question, tonight: what&#8217;s the thing that&#8217;s been in your head at 3am this month? Name it. That&#8217;s the section he skipped and you can&#8217;t.</p><p>Useful. But not the numbers.</p><p>Your protein target in grams. The breakfast dose that clears the anabolic-resistance threshold. The weekly loading minimum. Which three of his 150 supplements survive. And the stress protocol that should have been section 6 &#8212; the one that costs nothing and takes eleven minutes.</p><p>the stress protocol he left blank, your real protein number in grams, the breakfast dose that actually registers, the two-a-week loading minimum, and the three supplements that survive out of 150.</p><p>Section 6 goes first.</p><p>One question before you go.</p><p>Not which tip you liked. Which one you&#8217;ve already tried &#8212; and dropped.</p><p>That&#8217;s the part that actually tells me something. Starting is easy. It&#8217;s where it fell apart that matters, and after 50 it tends to fall apart in the same few places.</p><p>Reply to this email, or comment below, with one line:</p><p><strong>What have you already tried that should have worked &#8212; and didn&#8217;t?</strong></p><p>The protein push you kept up for three weeks. The gym membership from January. The supplement someone convincing sold you. The evening walk that died when it got dark at 4pm.</p><p>Tell me what it was, and roughly how long you lasted.</p><p>I read these. I won&#8217;t tell you to try harder &#8212; that&#8217;s the entire argument of this post. If the plan didn&#8217;t fit your body, the failure is information.</p><p>One line is enough.</p><div class="directMessage button" data-attrs="{&quot;userId&quot;:364343734,&quot;userName&quot;:&quot;Stay Young&quot;,&quot;canDm&quot;:null,&quot;dmUpgradeOptions&quot;:null,&quot;isEditorNode&quot;:true}" data-component-name="DirectMessageToDOM"></div><p>His order: exercise, nutrition, supplements, sleep, therapies, stress, cost.</p><p>Stress is sixth. Behind 150 capsules and a magnetic mat. That&#8217;s not a ranking, that&#8217;s a running order for a video &#8212; and it&#8217;s exactly backwards for you, because a cortisol curve that never comes down will quietly undo the training, the protein and the sleep in that order, which is why everything below starts where his breakdown stopped.</p><h4><strong>Stress &#8594; Sleep &#8594; Feed &#8594; Load &#8594; Delete.</strong></h4>
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   ]]></content:encoded></item><item><title><![CDATA[Your blood holds one sugar cube. A banana has six.]]></title><description><![CDATA[Your entire bloodstream holds about one teaspoon of sugar.]]></description><link>https://stayyoung.substack.com/p/your-blood-holds-one-sugar-cube-a</link><guid isPermaLink="false">https://stayyoung.substack.com/p/your-blood-holds-one-sugar-cube-a</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Fri, 10 Jul 2026 08:56:21 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!3ncm!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1c0369f7-ebf3-4516-8d78-8fcea648a08f_582x527.jpeg" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>Your entire bloodstream holds about one teaspoon of sugar.</p><p>A single banana delivers roughly six times that &#8212; all at once.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;175ef9f1-93a2-4c5e-ac0a-9bb312e8bf9d&quot;,&quot;duration&quot;:null}"></div><p>A doctor who has helped 157 patients reverse type 2 diabetes without drugs since 2013 explains why the modern diet keeps you hungry, sick, and aging faster &#8212; and how to reverse it.</p><p>If your fasting glucose has been creeping up &#8212; or you&#8217;ve been told your numbers are &#8220;borderline&#8221; &#8212; this post is for you.</p><p>The problem often isn&#8217;t willpower.</p><p>It&#8217;s that the modern diet is engineered to keep your blood sugar on a rollercoaster you were never designed to ride.</p><h3>9 LESSONS &#8212; REORDERED BY WHAT MATTERS MOST</h3><h4>1 &#8212; It builds silently for 10 years before anyone catches it</h4><p>Start here &#8212; because this is the part almost nobody understands.</p><p>Insulin resistance doesn&#8217;t appear the day you&#8217;re diagnosed.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;9ce23795-41f5-41c8-bfce-d7b7a6ebd413&quot;,&quot;duration&quot;:null}"></div><p>Your liver quietly fills with fat for roughly a decade before diabetes shows up on a test.</p><p>By the time a doctor catches it, the pancreas is often already struggling &#8212; a stage this doctor calls &#8220;the long, silent scream.&#8221;</p><p>And a third of people with type 2 diabetes don&#8217;t know they have it &#8212; because they&#8217;ve never been tested.</p><p>The damage is happening long before the symptoms.</p><h4>2 &#8212; Your entire bloodstream holds just one teaspoon of sugar</h4><p>This single fact reframes everything about how you eat.</p><p>With normal blood sugar, your entire bloodstream contains about one teaspoon &#8212; one sugar cube&#8217;s worth &#8212; of glucose at any moment.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;b9844d91-aa5d-4208-8acd-fe89b14dfe81&quot;,&quot;duration&quot;:null}"></div><p>When you drink orange juice or eat a banana, you deliver several times that amount in minutes.</p><p>Your body scrambles to store the excess &#8212; and the mechanism it uses is exactly what drives fat storage and insulin resistance over time.</p><p>Your body was simply never designed to handle that much sugar at once.</p><h4>3 &#8212; The modern diet keeps you permanently hungry</h4><p>This is the trap most people never escape because they don&#8217;t know it&#8217;s happening.</p><p>High-carb foods spike your blood sugar. Insulin then crashes it back down &#8212; often too far.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;c4c139fe-aa1c-46cf-bf8f-31803b0f75fb&quot;,&quot;duration&quot;:null}"></div><p>That crash makes you ravenously hungry again, so you reach for more carbohydrate to fix it.</p><p>The cycle never ends.</p><p>It isn&#8217;t a lack of discipline. It&#8217;s a blood sugar rollercoaster engineered into the food itself.</p><p>Break the spike, and the hunger loop breaks with it.</p><h4>4 &#8212; Starch is just sugar in disguise</h4><p>Bread, rice, and pasta aren&#8217;t sweet &#8212; which is exactly why they slip past your defenses.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;cb3f67b8-bcd4-4466-99fa-a0d40cf6f435&quot;,&quot;duration&quot;:null}"></div><p>Your body breaks them down into pure glucose within minutes of eating them.</p><p>A bowl of cornflakes converts to roughly 8 teaspoons of sugar. A baked potato, around 9. White rice, close to 10.</p><p>None of them taste sweet.</p><p>All of them hit your bloodstream like they do.</p><h4>5 &#8212; &#8220;Healthy&#8221; juice is liquid candy</h4><p>Orange juice sits in the health aisle. Your liver treats it like a soda.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;3650ce11-c9f1-427d-8db4-52228de22c02&quot;,&quot;duration&quot;:null}"></div><p>When fruit is juiced, the fiber is stripped away and the sugar is concentrated.</p><p>Your blood sugar spikes fast, insulin responds hard, and you&#8217;re hungry again within the hour.</p><p>Whole fruit comes with fiber that slows everything down.</p><p>Juice removes the one thing that made the fruit safe.</p><h4>6 &#8212; White chocolate is mostly sugar</h4><p>Someone watched white chocolate being made &#8212; sugar poured into a cylinder until it was roughly 80% full, then syrup added.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;95125555-c296-4e66-acef-0daf1d7bafdc&quot;,&quot;duration&quot;:null}"></div><p>Which means people who believe they&#8217;re addicted to chocolate are often simply addicted to sugar.</p><p>The craving isn&#8217;t for the chocolate.</p><p>It&#8217;s for the blood sugar spike underneath it.</p><h4>7 &#8212; Belly fat is a warning sign you can measure at home</h4><p>Your waist should measure less than half your height.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;dc3aec38-3dac-43b5-937c-fb6870b8702b&quot;,&quot;duration&quot;:null}"></div><p>The test takes 30 seconds: cut a piece of string as tall as you are, fold it in half, and wrap it around your belly.</p><p>If it doesn&#8217;t reach around &#8212; that&#8217;s a signal worth taking seriously.</p><p>Belly fat isn&#8217;t just cosmetic. It reflects the visceral fat wrapping your organs &#8212; the fat most directly tied to insulin resistance.</p><h4>8 &#8212; Every year of poor control costs you around 100 days of life</h4><p>This is the number that makes the urgency real.</p><p>Research suggests each year of poorly controlled diabetes may cost roughly a third of a year of life expectancy.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;89c7948b-ef5d-4c27-b13a-a990e656ff0c&quot;,&quot;duration&quot;:null}"></div><p>That&#8217;s 100 days lost for every year you wait to address it.</p><p>But the direction runs both ways.</p><p>The earlier you act, the more of those days you keep.</p><h4>9 &#8212; And here&#8217;s the hope: it can be reversed</h4><p>End here &#8212; because this is the part that changes everything.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!3ncm!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1c0369f7-ebf3-4516-8d78-8fcea648a08f_582x527.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!3ncm!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1c0369f7-ebf3-4516-8d78-8fcea648a08f_582x527.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!3ncm!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1c0369f7-ebf3-4516-8d78-8fcea648a08f_582x527.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!3ncm!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1c0369f7-ebf3-4516-8d78-8fcea648a08f_582x527.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!3ncm!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1c0369f7-ebf3-4516-8d78-8fcea648a08f_582x527.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!3ncm!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1c0369f7-ebf3-4516-8d78-8fcea648a08f_582x527.jpeg" width="582" height="527" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/1c0369f7-ebf3-4516-8d78-8fcea648a08f_582x527.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:527,&quot;width&quot;:582,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:50644,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/206333063?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1c0369f7-ebf3-4516-8d78-8fcea648a08f_582x527.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!3ncm!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1c0369f7-ebf3-4516-8d78-8fcea648a08f_582x527.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!3ncm!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1c0369f7-ebf3-4516-8d78-8fcea648a08f_582x527.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!3ncm!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1c0369f7-ebf3-4516-8d78-8fcea648a08f_582x527.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!3ncm!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1c0369f7-ebf3-4516-8d78-8fcea648a08f_582x527.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>This doctor has helped 157 patients achieve drug-free remission since 2013.</p><p>Research suggests around 93% of pre-diabetics can return to normal blood sugar on a low-carbohydrate approach.</p><p>The earlier you start, the higher your chances &#8212; but even later intervention produces meaningful change.</p><p>This is not a disease you&#8217;re doomed to simply manage.</p><p>For many people, it&#8217;s one the right changes can reverse.</p><p><strong>Honest caveat:</strong> Diabetes reversal is real and documented, but it depends heavily on how early you start, your individual health, and medical supervision &#8212; especially if you&#8217;re on medication. This is information to bring to your doctor, not to replace them.</p><h4>THE BLOOD SUGAR REVERSAL PROTOCOL</h4>
      <p>
          <a href="/__u/stayyoung.substack.com/p/your-blood-holds-one-sugar-cube-a">
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   ]]></content:encoded></item><item><title><![CDATA[Your turmeric probably isn't working]]></title><description><![CDATA[Only 1&#8211;2% of the turmeric you swallow ever reaches your blood.]]></description><link>https://stayyoung.substack.com/p/your-turmeric-probably-isnt-working</link><guid isPermaLink="false">https://stayyoung.substack.com/p/your-turmeric-probably-isnt-working</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Mon, 06 Jul 2026 15:04:04 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!QiE-!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7ec096bf-7a35-43d0-94ca-894a25bf8669_733x417.jpeg" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>Only 1&#8211;2% of the turmeric you swallow ever reaches your blood.</p><p>Which means almost everyone taking it for inflammation is missing where it actually works.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;d28ba6a2-bbb0-42fc-a5cb-bd87d40db85b&quot;,&quot;duration&quot;:null}"></div><p>If you&#8217;ve been taking turmeric for stiff joints or general aches &#8212; and quietly wondering if it does anything &#8212; you&#8217;re not imagining it.</p><p>Most people take it in a form that barely absorbs.</p><p>The fix is cheap, simple, and changes everything.</p><h4>WHY TURMERIC WORKS &#8212; AND WHERE</h4><p>Most people assume turmeric enters the bloodstream and travels to wherever it hurts.</p><p>It doesn&#8217;t. Only 1&#8211;2% of curcumin &#8212; the active compound &#8212; gets absorbed into the blood.</p><p>The real work happens in your gut.</p><p>Research suggests turmeric acts primarily in the gut &#8212; feeding beneficial bacteria and calming the inflammatory signalling that begins there before spreading.<br><a href="https://pubmed.ncbi.nlm.nih.gov/28935403">Verify &#8594; pubmed.ncbi.nlm.nih.gov/28935403</a></p><p>This matters &#8212; because chronic inflammation rarely starts in your joints, brain, or heart.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;f2c8695b-b0ad-45de-9586-79e5adbd202d&quot;,&quot;duration&quot;:null}"></div><p>It starts in the gut and spreads outward.</p><p>A painkiller blocks the signal. Turmeric may reduce the inflammation producing it &#8212; at the source.</p><p><strong>Honest caveat:</strong> Research on turmeric is promising but most human studies are small or short. It&#8217;s not a cure &#8212; it&#8217;s one accessible tool, best used alongside good diet, movement, and sleep.</p><h3>WHAT TURMERIC MAY SUPPORT &#8212; REORDERED BY WHAT MATTERS MOST AFTER 50</h3><h4>&#8594; <strong>Your gut microbiome diversity</strong></h4><p>Modern humans carry roughly half the microbial diversity of hunter-gatherer populations.<br>Turmeric feeds the specific bacteria that produce your body&#8217;s own anti-inflammatory compounds &#8212; rebuilding the diversity that regulates inflammation everywhere else.</p><h4>&#8594; <strong>Your brain as it ages</strong></h4><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!QiE-!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7ec096bf-7a35-43d0-94ca-894a25bf8669_733x417.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!QiE-!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7ec096bf-7a35-43d0-94ca-894a25bf8669_733x417.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!QiE-!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7ec096bf-7a35-43d0-94ca-894a25bf8669_733x417.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!QiE-!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7ec096bf-7a35-43d0-94ca-894a25bf8669_733x417.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!QiE-!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7ec096bf-7a35-43d0-94ca-894a25bf8669_733x417.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!QiE-!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7ec096bf-7a35-43d0-94ca-894a25bf8669_733x417.jpeg" width="733" height="417" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/7ec096bf-7a35-43d0-94ca-894a25bf8669_733x417.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:417,&quot;width&quot;:733,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:44130,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/205509377?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7ec096bf-7a35-43d0-94ca-894a25bf8669_733x417.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!QiE-!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7ec096bf-7a35-43d0-94ca-894a25bf8669_733x417.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!QiE-!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7ec096bf-7a35-43d0-94ca-894a25bf8669_733x417.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!QiE-!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7ec096bf-7a35-43d0-94ca-894a25bf8669_733x417.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!QiE-!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7ec096bf-7a35-43d0-94ca-894a25bf8669_733x417.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Researchers increasingly link Alzheimer&#8217;s to metabolic dysfunction &#8212; some call it &#8220;type 3 diabetes.&#8221;<br>Turmeric appears to influence several of the same inflammatory pathways involved in cognitive decline.<br>Populations consuming 2&#8211;5g daily show some of the lowest recorded dementia rates &#8212; though diet and lifestyle also contribute.</p><h4>&#8594; <strong>Your metabolism</strong></h4><p>Turmeric doesn&#8217;t burn fat directly.</p><div class="native-video-embed" data-component-name="VideoPlaceholder" data-attrs="{&quot;mediaUploadId&quot;:&quot;f2c8695b-b0ad-45de-9586-79e5adbd202d&quot;,&quot;duration&quot;:null}"></div><p><br>But research suggests it may support healthier metabolic function &#8212; influencing how the body handles carbohydrates and fat storage.<br>Paired with a cleaner diet, effects compound over time.</p><h4>&#8594; <strong>Your liver&#8217;s natural processing</strong></h4><p>Turmeric stimulates bile production &#8212; your liver&#8217;s primary tool for handling fats and clearing waste.<br>One of its fastest-acting effects. Some people notice digestive changes within days.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!KIZP!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3091bf00-6d86-4334-aace-1b1c4a7131eb_738x414.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!KIZP!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3091bf00-6d86-4334-aace-1b1c4a7131eb_738x414.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!KIZP!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3091bf00-6d86-4334-aace-1b1c4a7131eb_738x414.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!KIZP!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3091bf00-6d86-4334-aace-1b1c4a7131eb_738x414.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!KIZP!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3091bf00-6d86-4334-aace-1b1c4a7131eb_738x414.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!KIZP!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3091bf00-6d86-4334-aace-1b1c4a7131eb_738x414.jpeg" width="738" height="414" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/3091bf00-6d86-4334-aace-1b1c4a7131eb_738x414.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:414,&quot;width&quot;:738,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:49822,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/205509377?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3091bf00-6d86-4334-aace-1b1c4a7131eb_738x414.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!KIZP!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3091bf00-6d86-4334-aace-1b1c4a7131eb_738x414.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!KIZP!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3091bf00-6d86-4334-aace-1b1c4a7131eb_738x414.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!KIZP!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3091bf00-6d86-4334-aace-1b1c4a7131eb_738x414.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!KIZP!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3091bf00-6d86-4334-aace-1b1c4a7131eb_738x414.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p><strong>12 SPOTS. WE DON&#8217;T TAKE EVERYONE.</strong></p><p>We build personalised protocols around your biology &#8212; not templates.</p><p>12 spots remaining. Every person applies. We choose based on readiness.</p><p><strong>&#8594; Reply to this post and tell me where you&#8217;re starting &#8212; I read every one.</strong></p><div class="directMessage button" data-attrs="{&quot;userId&quot;:364343734,&quot;userName&quot;:&quot;Stay Young&quot;,&quot;canDm&quot;:null,&quot;dmUpgradeOptions&quot;:null,&quot;isEditorNode&quot;:true}" data-component-name="DirectMessageToDOM"></div><p>the exact way to take turmeric so it actually gets absorbed &#8212; the dose, the form, the timing, and the one pairing almost everyone skips.</p><h4>THE ABSORPTION PROTOCOL</h4>
      <p>
          <a href="/__u/stayyoung.substack.com/p/your-turmeric-probably-isnt-working">
              Read more
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   ]]></content:encoded></item><item><title><![CDATA[34% less heart disease risk — unexpected source]]></title><description><![CDATA[A large-scale study tracking over one million men just produced one of the most unexpected findings in longevity research.]]></description><link>https://stayyoung.substack.com/p/34-less-heart-disease-risk-unexpected</link><guid isPermaLink="false">https://stayyoung.substack.com/p/34-less-heart-disease-risk-unexpected</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Sat, 04 Jul 2026 10:31:35 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!LmI-!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd985c311-4397-455b-a802-83c66857cca6_631x587.webp" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>A large-scale study tracking over one million men just produced one of the most unexpected findings in longevity research.</p><p>A class of drugs primarily known for treating erectile dysfunction was associated with a 34% reduction in all-cause mortality, a 27% reduction in major heart disease events, and a 32% reduction in dementia risk.</p><div class="captioned-image-container"><figure><a class="image-link image2" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!EZoe!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Facc0e803-2a03-425a-85ff-9440b3e45d9e_680x181.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!EZoe!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Facc0e803-2a03-425a-85ff-9440b3e45d9e_680x181.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!EZoe!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Facc0e803-2a03-425a-85ff-9440b3e45d9e_680x181.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!EZoe!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Facc0e803-2a03-425a-85ff-9440b3e45d9e_680x181.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!EZoe!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Facc0e803-2a03-425a-85ff-9440b3e45d9e_680x181.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!EZoe!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Facc0e803-2a03-425a-85ff-9440b3e45d9e_680x181.jpeg" width="680" height="181" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/acc0e803-2a03-425a-85ff-9440b3e45d9e_680x181.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:181,&quot;width&quot;:680,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:26252,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:false,&quot;topImage&quot;:true,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/204744678?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Facc0e803-2a03-425a-85ff-9440b3e45d9e_680x181.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!EZoe!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Facc0e803-2a03-425a-85ff-9440b3e45d9e_680x181.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!EZoe!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Facc0e803-2a03-425a-85ff-9440b3e45d9e_680x181.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!EZoe!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Facc0e803-2a03-425a-85ff-9440b3e45d9e_680x181.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!EZoe!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Facc0e803-2a03-425a-85ff-9440b3e45d9e_680x181.jpeg 1456w" sizes="100vw" fetchpriority="high"></picture><div></div></div></a></figure></div><p>The mechanism behind those numbers is one your body is already using &#8212; and one you can support today without a prescription.</p><p>If you&#8217;ve been paying attention to longevity science &#8212; the research on NAD+, autophagy, senescent cells &#8212; you&#8217;ve probably noticed a pattern.</p><p>The most interesting findings keep pointing to the same underlying system: blood vessel health, inflammation, and the body&#8217;s ability to maintain circulation to every organ as it ages.</p><p>The recent findings around PDE5 inhibitors &#8212; the drug class that includes tadalafil (Cialis) and sildenafil (Viagra) &#8212; point to exactly that system.</p><p>And the mechanism they work through is one every adult over 50 should understand.</p><h3><strong>WHAT THE RESEARCH ACTUALLY SHOWS</strong></h3><h4><strong>Finding 1 &#8212; The mortality data is significant</strong></h4><p>A longitudinal study tracking over one million men aged 40 and above found that regular use of PDE5 inhibitors was associated with measurably reduced risk across multiple health outcomes.</p><p>The numbers, in the research:</p><p>&#8594; All-cause mortality: 34% lower risk<br>&#8594; Major heart disease events: 27% lower risk<br>&#8594; Stroke: 34% lower risk<br>&#8594; Dementia: 32% lower risk</p><p>Research suggests these associations may be explained by the cardiovascular effects of these compounds &#8212; specifically their action on nitric oxide pathways and arterial health.</p><div class="captioned-image-container"><figure><a class="image-link image2" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!VxGO!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbe6d5de3-5a17-4ef6-8bc7-fc31d474faa8_680x173.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!VxGO!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbe6d5de3-5a17-4ef6-8bc7-fc31d474faa8_680x173.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!VxGO!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbe6d5de3-5a17-4ef6-8bc7-fc31d474faa8_680x173.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!VxGO!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbe6d5de3-5a17-4ef6-8bc7-fc31d474faa8_680x173.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!VxGO!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbe6d5de3-5a17-4ef6-8bc7-fc31d474faa8_680x173.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!VxGO!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbe6d5de3-5a17-4ef6-8bc7-fc31d474faa8_680x173.jpeg" width="680" height="173" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/be6d5de3-5a17-4ef6-8bc7-fc31d474faa8_680x173.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:173,&quot;width&quot;:680,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:32341,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/204744678?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbe6d5de3-5a17-4ef6-8bc7-fc31d474faa8_680x173.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!VxGO!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbe6d5de3-5a17-4ef6-8bc7-fc31d474faa8_680x173.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!VxGO!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbe6d5de3-5a17-4ef6-8bc7-fc31d474faa8_680x173.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!VxGO!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbe6d5de3-5a17-4ef6-8bc7-fc31d474faa8_680x173.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!VxGO!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fbe6d5de3-5a17-4ef6-8bc7-fc31d474faa8_680x173.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div></div></div></a></figure></div><p>A separate retrospective analysis of over 200,000 participants evaluating the longevity potential of 407 prescription drugs placed both tadalafil and sildenafil among the most promising candidates for further investigation.</p><p>Research on this is still developing. These are observational associations &#8212; not proof of direct causation. Confounding factors (men who seek treatment for ED may have better overall healthcare engagement) are acknowledged in the literature. The NIA&#8217;s ITP programme has scheduled sildenafil for pre-clinical longevity testing in mice, which will produce more controlled data.<br><a href="https://pubmed.ncbi.nlm.nih.gov/36031797">Verify the study &#8594; pubmed.ncbi.nlm.nih.gov/36031797</a></p><h4>Finding 2 &#8212; The mechanism is nitric oxide</h4><p>PDE5 inhibitors work by blocking an enzyme that breaks down cyclic GMP &#8212; a molecule that signals arterial smooth muscle to relax.</p><div class="captioned-image-container"><figure><a class="image-link image2" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!cKTV!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0e0eca4b-1141-4803-9eb6-b3111bcf1418_680x218.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!cKTV!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0e0eca4b-1141-4803-9eb6-b3111bcf1418_680x218.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!cKTV!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0e0eca4b-1141-4803-9eb6-b3111bcf1418_680x218.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!cKTV!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0e0eca4b-1141-4803-9eb6-b3111bcf1418_680x218.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!cKTV!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0e0eca4b-1141-4803-9eb6-b3111bcf1418_680x218.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!cKTV!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0e0eca4b-1141-4803-9eb6-b3111bcf1418_680x218.jpeg" width="680" height="218" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/0e0eca4b-1141-4803-9eb6-b3111bcf1418_680x218.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:218,&quot;width&quot;:680,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:32844,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/204744678?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0e0eca4b-1141-4803-9eb6-b3111bcf1418_680x218.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!cKTV!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0e0eca4b-1141-4803-9eb6-b3111bcf1418_680x218.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!cKTV!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0e0eca4b-1141-4803-9eb6-b3111bcf1418_680x218.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!cKTV!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0e0eca4b-1141-4803-9eb6-b3111bcf1418_680x218.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!cKTV!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0e0eca4b-1141-4803-9eb6-b3111bcf1418_680x218.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div></div></div></a></figure></div><p>The result: blood vessels dilate, circulation improves, blood pressure drops slightly, and blood flow increases to every organ downstream.</p><p>This is the nitric oxide pathway.</p><p>And it matters enormously for adults over 50 &#8212; because nitric oxide production drops by approximately 50% between the ages of 20 and 70.</p><p>That drop is not cosmetic.</p><p>It is associated with arterial stiffening, reduced organ blood flow, cognitive decline, and the cardiovascular aging that drives most of the mortality risk in your age group.</p><p>PDE5 inhibitors amplify the nitric oxide signal.</p><p>The research question is whether this amplification produces the long-term cardiovascular and neurological benefits the observational data suggests.</p><h4>Finding 3 &#8212; Metabolic effects</h4><p>A 2022 clinical trial in men with diabetes found that daily low-dose tadalafil modestly reduced HbA1c &#8212; the 3-month blood sugar marker &#8212; over 6 months, suggesting improved insulin sensitivity.</p><p>A separate animal study found tadalafil reduced visceral fat accumulation and increased markers of metabolically active brown fat in subjects on a high-fat diet.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!LmI-!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd985c311-4397-455b-a802-83c66857cca6_631x587.webp" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!LmI-!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd985c311-4397-455b-a802-83c66857cca6_631x587.webp 424w, /__u/substackcdn.com/image/fetch/$s_!LmI-!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd985c311-4397-455b-a802-83c66857cca6_631x587.webp 848w, /__u/substackcdn.com/image/fetch/$s_!LmI-!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd985c311-4397-455b-a802-83c66857cca6_631x587.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!LmI-!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd985c311-4397-455b-a802-83c66857cca6_631x587.webp 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!LmI-!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd985c311-4397-455b-a802-83c66857cca6_631x587.webp" width="631" height="587" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd985c311-4397-455b-a802-83c66857cca6_631x587.webp 424w, /__u/substackcdn.com/image/fetch/$s_!LmI-!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd985c311-4397-455b-a802-83c66857cca6_631x587.webp 848w, /__u/substackcdn.com/image/fetch/$s_!LmI-!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd985c311-4397-455b-a802-83c66857cca6_631x587.webp 1272w, /__u/substackcdn.com/image/fetch/$s_!LmI-!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd985c311-4397-455b-a802-83c66857cca6_631x587.webp 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>The metabolic findings are preliminary &#8212; particularly the fat tissue data, which comes from animal models.</p><p>What they point to is consistent with the mechanism: improved blood flow to metabolically active tissue may support more efficient glucose and fat metabolism.</p><p>Research on this is still at an early stage in human populations.<br><a href="https://pubmed.ncbi.nlm.nih.gov/35196397">Verify the study &#8594; pubmed.ncbi.nlm.nih.gov/35196397</a></p><h4>Finding 4 &#8212; Inflammation reduction</h4><p>Chronic low-grade inflammation &#8212; what researchers call inflammaging &#8212; is one of the primary biological drivers of accelerated aging.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!8ghd!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Ff68ded65-b7a8-46b4-b9e0-17efc91a7abe_680x252.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!8ghd!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Ff68ded65-b7a8-46b4-b9e0-17efc91a7abe_680x252.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!8ghd!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Ff68ded65-b7a8-46b4-b9e0-17efc91a7abe_680x252.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!8ghd!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Ff68ded65-b7a8-46b4-b9e0-17efc91a7abe_680x252.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!8ghd!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Ff68ded65-b7a8-46b4-b9e0-17efc91a7abe_680x252.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!8ghd!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Ff68ded65-b7a8-46b4-b9e0-17efc91a7abe_680x252.jpeg" width="680" height="252" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Ff68ded65-b7a8-46b4-b9e0-17efc91a7abe_680x252.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!8ghd!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Ff68ded65-b7a8-46b4-b9e0-17efc91a7abe_680x252.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!8ghd!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Ff68ded65-b7a8-46b4-b9e0-17efc91a7abe_680x252.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!8ghd!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Ff68ded65-b7a8-46b4-b9e0-17efc91a7abe_680x252.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>In a small clinical study, men taking daily low-dose tadalafil for 6 months showed reduction in elevated inflammatory markers including IL-6 &#8212; returning toward normal range.</p><p>This finding is consistent with the broader cardiovascular mechanism: improved arterial health reduces the endothelial stress that drives inflammatory signalling.</p><h4>Finding 5 &#8212; Brain health and cognitive function</h4><p>Better blood flow to the brain is one of the most consistently protective factors in cognitive aging research.</p><div class="captioned-image-container"><figure><a class="image-link image2" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!4w_K!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F099f7d3e-292b-47d5-ba40-528c99c14a30_680x165.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!4w_K!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F099f7d3e-292b-47d5-ba40-528c99c14a30_680x165.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!4w_K!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F099f7d3e-292b-47d5-ba40-528c99c14a30_680x165.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!4w_K!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F099f7d3e-292b-47d5-ba40-528c99c14a30_680x165.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!4w_K!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F099f7d3e-292b-47d5-ba40-528c99c14a30_680x165.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!4w_K!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F099f7d3e-292b-47d5-ba40-528c99c14a30_680x165.jpeg" width="680" height="165" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F099f7d3e-292b-47d5-ba40-528c99c14a30_680x165.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!4w_K!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F099f7d3e-292b-47d5-ba40-528c99c14a30_680x165.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!4w_K!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F099f7d3e-292b-47d5-ba40-528c99c14a30_680x165.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!4w_K!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F099f7d3e-292b-47d5-ba40-528c99c14a30_680x165.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div></div></div></a></figure></div><p>In a small trial, older men taking daily tadalafil showed improvement on cognitive tests of attention and processing speed &#8212; with measurable changes in brainwave patterns on EEG.</p><p>Two large population studies linked PDE5 inhibitor use to lower dementia risk &#8212; one analysis of 200,000 men found approximately 18% lower odds of developing Alzheimer&#8217;s in users compared to non-users.</p><p>The cognitive findings align with the nitric oxide mechanism: cerebral blood flow is critically dependent on arterial dilation capacity, which declines with age and with declining nitric oxide availability.</p><p><strong>THE CRITICAL SAFETY CONTEXT</strong></p><p>&#9888;&#65039; <strong>This section is non-negotiable before anything else:</strong></p><p>PDE5 inhibitors are prescription medications &#8212; not supplements.</p><p>They require a doctor&#8217;s evaluation before use for multiple reasons:</p><p>&#8594; <strong>Nitrate interaction:</strong> Combining any PDE5 inhibitor with nitrate medications</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!_Cau!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7da7ee1d-7b3e-40ad-8605-ae58a7612670_680x280.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!_Cau!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7da7ee1d-7b3e-40ad-8605-ae58a7612670_680x280.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!_Cau!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7da7ee1d-7b3e-40ad-8605-ae58a7612670_680x280.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!_Cau!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7da7ee1d-7b3e-40ad-8605-ae58a7612670_680x280.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!_Cau!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7da7ee1d-7b3e-40ad-8605-ae58a7612670_680x280.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!_Cau!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7da7ee1d-7b3e-40ad-8605-ae58a7612670_680x280.jpeg" width="680" height="280" 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/__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7da7ee1d-7b3e-40ad-8605-ae58a7612670_680x280.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!_Cau!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7da7ee1d-7b3e-40ad-8605-ae58a7612670_680x280.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!_Cau!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7da7ee1d-7b3e-40ad-8605-ae58a7612670_680x280.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!_Cau!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F7da7ee1d-7b3e-40ad-8605-ae58a7612670_680x280.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p> (including nitroglycerin, isosorbide mononitrate/dinitrate &#8212; commonly prescribed for heart conditions) causes a dangerous and potentially fatal drop in blood pressure. A study of over 55,000 men found a <strong>39% increase in all-cause mortality</strong> when the two drug classes were combined. This is not a theoretical risk &#8212; it is documented and serious.</p><p>&#8594; <strong>Blood pressure medications:</strong> PDE5 inhibitors have additive blood pressure-lowering effects. Multiple BP medications combined with tadalafil or sildenafil requires medical supervision.</p><p>&#8594; <strong>Existing cardiovascular conditions:</strong> The drugs that produce the protective associations in healthy men may behave differently in men with established heart disease or very low blood pressure.</p><p>If you are interested in whether a low-dose PDE5 inhibitor is appropriate for you &#8212; that is a conversation to have with your GP or cardiologist, with your full medication list in hand.</p><p><strong>THE NATURAL NITRIC OXIDE PROTOCOL</strong></p>
      <p>
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   ]]></content:encoded></item><item><title><![CDATA[My bloodwork at 50 beat my bloodwork at 20]]></title><description><![CDATA[My bloodwork at 50 is better than it was at 20.]]></description><link>https://stayyoung.substack.com/p/my-bloodwork-at-50-beat-my-bloodwork</link><guid isPermaLink="false">https://stayyoung.substack.com/p/my-bloodwork-at-50-beat-my-bloodwork</guid><dc:creator><![CDATA[Stay Young]]></dc:creator><pubDate>Wed, 01 Jul 2026 09:20:16 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!epDc!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F49416df3-84e7-4e68-bf34-c613e94fd312_860x904.png" length="0" type="image/jpeg"/><content:encoded><![CDATA[<p>My bloodwork at 50 is better than it was at 20.</p><p>Not because of one supplement. Because of which ones I stopped wasting money on &#8212; and which ones I didn&#8217;t.</p><p><em><strong>This content is for educational purposes only and is not medical advice. Always consult your healthcare provider before making changes to your health routine &#8212;<br>especially if you have existing conditions or take medications.</strong></em></p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!epDc!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F49416df3-84e7-4e68-bf34-c613e94fd312_860x904.png" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!epDc!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F49416df3-84e7-4e68-bf34-c613e94fd312_860x904.png 424w, /__u/substackcdn.com/image/fetch/$s_!epDc!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F49416df3-84e7-4e68-bf34-c613e94fd312_860x904.png 848w, /__u/substackcdn.com/image/fetch/$s_!epDc!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F49416df3-84e7-4e68-bf34-c613e94fd312_860x904.png 1272w, /__u/substackcdn.com/image/fetch/$s_!epDc!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F49416df3-84e7-4e68-bf34-c613e94fd312_860x904.png 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!epDc!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F49416df3-84e7-4e68-bf34-c613e94fd312_860x904.png" width="860" height="904" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/49416df3-84e7-4e68-bf34-c613e94fd312_860x904.png&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:904,&quot;width&quot;:860,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:1525284,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/png&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:false,&quot;topImage&quot;:true,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/204283324?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F49416df3-84e7-4e68-bf34-c613e94fd312_860x904.png&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!epDc!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F49416df3-84e7-4e68-bf34-c613e94fd312_860x904.png 424w, /__u/substackcdn.com/image/fetch/$s_!epDc!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F49416df3-84e7-4e68-bf34-c613e94fd312_860x904.png 848w, /__u/substackcdn.com/image/fetch/$s_!epDc!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F49416df3-84e7-4e68-bf34-c613e94fd312_860x904.png 1272w, /__u/substackcdn.com/image/fetch/$s_!epDc!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F49416df3-84e7-4e68-bf34-c613e94fd312_860x904.png 1456w" sizes="100vw" fetchpriority="high"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>If your cabinet has a dozen bottles and you couldn&#8217;t tell me which ones are actually working &#8212; you&#8217;re not alone. Here&#8217;s what the evidence actually supports, reordered by what matters most first.</p><h4><strong>1 &#8212; Magnesium glycinate &#8212; the deficiency almost everyone has</strong></h4><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!A-5F!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fba4cc7e5-dc0e-4451-a4fc-39fa87381761_1474x1088.png" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!A-5F!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fba4cc7e5-dc0e-4451-a4fc-39fa87381761_1474x1088.png 424w, /__u/substackcdn.com/image/fetch/$s_!A-5F!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fba4cc7e5-dc0e-4451-a4fc-39fa87381761_1474x1088.png 848w, /__u/substackcdn.com/image/fetch/$s_!A-5F!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fba4cc7e5-dc0e-4451-a4fc-39fa87381761_1474x1088.png 1272w, /__u/substackcdn.com/image/fetch/$s_!A-5F!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fba4cc7e5-dc0e-4451-a4fc-39fa87381761_1474x1088.png 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!A-5F!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fba4cc7e5-dc0e-4451-a4fc-39fa87381761_1474x1088.png" width="1456" height="1075" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/ba4cc7e5-dc0e-4451-a4fc-39fa87381761_1474x1088.png&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:1075,&quot;width&quot;:1456,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:1036117,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/png&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:false,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/204283324?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fba4cc7e5-dc0e-4451-a4fc-39fa87381761_1474x1088.png&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!A-5F!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fba4cc7e5-dc0e-4451-a4fc-39fa87381761_1474x1088.png 424w, /__u/substackcdn.com/image/fetch/$s_!A-5F!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fba4cc7e5-dc0e-4451-a4fc-39fa87381761_1474x1088.png 848w, /__u/substackcdn.com/image/fetch/$s_!A-5F!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fba4cc7e5-dc0e-4451-a4fc-39fa87381761_1474x1088.png 1272w, /__u/substackcdn.com/image/fetch/$s_!A-5F!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fba4cc7e5-dc0e-4451-a4fc-39fa87381761_1474x1088.png 1456w" sizes="100vw"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>An estimated 45&#8211;68% of adults in Western countries are magnesium deficient &#8212; and most standard bloodwork doesn&#8217;t catch it, because serum magnesium stays &#8220;normal&#8221; until deficiency is severe.</p><p>Magnesium relaxes smooth muscle in blood vessels, supports deep sleep, and is a cofactor in over 300 enzymatic reactions.</p><p>The glycinate form is the most bioavailable and gentlest on digestion.</p><p>400&#8211;800mg before bed is the commonly cited range &#8212; start at the lower end.</p><h4>2 &#8212; Vitamin C &#8212; tissue repair, not just colds</h4><p>Vitamin C is essential for collagen synthesis &#8212; meaning it directly supports joint, skin, and connective tissue repair, not just immune function.</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!UCal!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa96ddbb1-51c0-4c61-815c-a09d01650c27_3900x2400.png" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!UCal!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa96ddbb1-51c0-4c61-815c-a09d01650c27_3900x2400.png 424w, /__u/substackcdn.com/image/fetch/$s_!UCal!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa96ddbb1-51c0-4c61-815c-a09d01650c27_3900x2400.png 848w, /__u/substackcdn.com/image/fetch/$s_!UCal!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa96ddbb1-51c0-4c61-815c-a09d01650c27_3900x2400.png 1272w, /__u/substackcdn.com/image/fetch/$s_!UCal!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa96ddbb1-51c0-4c61-815c-a09d01650c27_3900x2400.png 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!UCal!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa96ddbb1-51c0-4c61-815c-a09d01650c27_3900x2400.png" width="1456" height="896" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/a96ddbb1-51c0-4c61-815c-a09d01650c27_3900x2400.png&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:896,&quot;width&quot;:1456,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:871822,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/png&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/204283324?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa96ddbb1-51c0-4c61-815c-a09d01650c27_3900x2400.png&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!UCal!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa96ddbb1-51c0-4c61-815c-a09d01650c27_3900x2400.png 424w, /__u/substackcdn.com/image/fetch/$s_!UCal!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa96ddbb1-51c0-4c61-815c-a09d01650c27_3900x2400.png 848w, /__u/substackcdn.com/image/fetch/$s_!UCal!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa96ddbb1-51c0-4c61-815c-a09d01650c27_3900x2400.png 1272w, /__u/substackcdn.com/image/fetch/$s_!UCal!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fa96ddbb1-51c0-4c61-815c-a09d01650c27_3900x2400.png 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Research suggests adequate vitamin C intake supports wound healing and reduces oxidative stress markers, particularly during illness or recovery.<br><a href="https://pubmed.ncbi.nlm.nih.gov/28805671">Verify the study &#8594; pubmed.ncbi.nlm.nih.gov/28805671</a></p><p>A few hundred mg to 1g daily from food or supplement form covers most needs; higher doses during acute illness are commonly used but should be discussed with a doctor if you have kidney issues.</p><h4>3 &#8212; Collagen peptides &#8212; what your body stops making after 40</h4><p>Collagen production declines measurably every year after 40.</p><p>Research suggests collagen peptide supplementation may support joint c</p><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!0nIM!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F36121655-c826-431a-825b-7ba6346955a8_1544x1188.png" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!0nIM!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F36121655-c826-431a-825b-7ba6346955a8_1544x1188.png 424w, /__u/substackcdn.com/image/fetch/$s_!0nIM!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F36121655-c826-431a-825b-7ba6346955a8_1544x1188.png 848w, /__u/substackcdn.com/image/fetch/$s_!0nIM!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F36121655-c826-431a-825b-7ba6346955a8_1544x1188.png 1272w, /__u/substackcdn.com/image/fetch/$s_!0nIM!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F36121655-c826-431a-825b-7ba6346955a8_1544x1188.png 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!0nIM!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F36121655-c826-431a-825b-7ba6346955a8_1544x1188.png" width="1456" height="1120" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/36121655-c826-431a-825b-7ba6346955a8_1544x1188.png&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:1120,&quot;width&quot;:1456,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:1000414,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/png&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/204283324?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F36121655-c826-431a-825b-7ba6346955a8_1544x1188.png&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!0nIM!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F36121655-c826-431a-825b-7ba6346955a8_1544x1188.png 424w, /__u/substackcdn.com/image/fetch/$s_!0nIM!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F36121655-c826-431a-825b-7ba6346955a8_1544x1188.png 848w, /__u/substackcdn.com/image/fetch/$s_!0nIM!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F36121655-c826-431a-825b-7ba6346955a8_1544x1188.png 1272w, /__u/substackcdn.com/image/fetch/$s_!0nIM!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F36121655-c826-431a-825b-7ba6346955a8_1544x1188.png 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>omfort, skin elasticity, and connective tissue recovery &#8212; with benefits that compound with consistent daily use over months, not days.<br><a href="https://pubmed.ncbi.nlm.nih.gov/30368550">Verify the study &#8594; pubmed.ncbi.nlm.nih.gov/30368550</a></p><p>10&#8211;15g daily, added to coffee or a smoothie, is the commonly studied dose.</p><h4>4 &#8212; Probiotics and fermented food &#8212; but quality matters more than quantity</h4><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!knQb!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27a516d0-bf64-40c3-857a-882580912f25_1937x1929.jpeg" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!knQb!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27a516d0-bf64-40c3-857a-882580912f25_1937x1929.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!knQb!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27a516d0-bf64-40c3-857a-882580912f25_1937x1929.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!knQb!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27a516d0-bf64-40c3-857a-882580912f25_1937x1929.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!knQb!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27a516d0-bf64-40c3-857a-882580912f25_1937x1929.jpeg 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!knQb!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27a516d0-bf64-40c3-857a-882580912f25_1937x1929.jpeg" width="1456" height="1450" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/27a516d0-bf64-40c3-857a-882580912f25_1937x1929.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:1450,&quot;width&quot;:1456,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:376965,&quot;alt&quot;:null,&quot;title&quot;:null,&quot;type&quot;:&quot;image/jpeg&quot;,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:&quot;https://stayyoung.substack.com/i/204283324?img=https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27a516d0-bf64-40c3-857a-882580912f25_1937x1929.jpeg&quot;,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" class="sizing-normal" alt="" srcset="/__u/substackcdn.com/image/fetch/$s_!knQb!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27a516d0-bf64-40c3-857a-882580912f25_1937x1929.jpeg 424w, /__u/substackcdn.com/image/fetch/$s_!knQb!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27a516d0-bf64-40c3-857a-882580912f25_1937x1929.jpeg 848w, /__u/substackcdn.com/image/fetch/$s_!knQb!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27a516d0-bf64-40c3-857a-882580912f25_1937x1929.jpeg 1272w, /__u/substackcdn.com/image/fetch/$s_!knQb!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F27a516d0-bf64-40c3-857a-882580912f25_1937x1929.jpeg 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>If gut health has been disrupted &#8212; by antibiotics, stress, or a low-fiber diet &#8212; probiotics can help rebuild diversity.</p><p>The honest caveat: probiotics aren&#8217;t always step one. If digestive function is already fragile, repairing the gut lining first (fiber, removing inflammatory foods) often matters more than adding bacteria to a damaged environment.</p><p>Fermented foods &#8212; kefir, plain yogurt, sauerkraut, kimchi &#8212; deliver live cultures in a food matrix that survives digestion better than many capsules.</p><p>If your bloodwork came back tomorrow &#8212; what&#8217;s the one number you&#8217;d be most nervous to see?</p><p>Cholesterol. Glucose. Inflammation markers. Something else.</p><p>Reply below. I read every one &#8212; and if there&#8217;s something specific I can point you toward based on what you share, I will.</p><div class="directMessage button" data-attrs="{&quot;userId&quot;:364343734,&quot;userName&quot;:&quot;Stay Young&quot;,&quot;canDm&quot;:null,&quot;dmUpgradeOptions&quot;:null,&quot;isEditorNode&quot;:true}" data-component-name="DirectMessageToDOM"></div><h4>5 &#8212; Berberine &#8212; the plant compound with real metabolic data behind it</h4><div class="captioned-image-container"><figure><a class="image-link image2 is-viewable-img" target="_blank" href="/__u/substackcdn.com/image/fetch/$s_!1KOG!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0c5cabc8-208b-4409-b25b-a07c10e8a400_1214x944.png" data-component-name="Image2ToDOM"><div class="image2-inset"><picture><source type="image/webp" srcset="/__u/substackcdn.com/image/fetch/$s_!1KOG!, /__u/stayyoung.substack.com/w_424, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0c5cabc8-208b-4409-b25b-a07c10e8a400_1214x944.png 424w, /__u/substackcdn.com/image/fetch/$s_!1KOG!, /__u/stayyoung.substack.com/w_848, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0c5cabc8-208b-4409-b25b-a07c10e8a400_1214x944.png 848w, /__u/substackcdn.com/image/fetch/$s_!1KOG!, /__u/stayyoung.substack.com/w_1272, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0c5cabc8-208b-4409-b25b-a07c10e8a400_1214x944.png 1272w, /__u/substackcdn.com/image/fetch/$s_!1KOG!, /__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_webp, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0c5cabc8-208b-4409-b25b-a07c10e8a400_1214x944.png 1456w" sizes="100vw"><img src="/__u/substackcdn.com/image/fetch/$s_!1KOG!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0c5cabc8-208b-4409-b25b-a07c10e8a400_1214x944.png" width="1214" height="944" 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/__u/stayyoung.substack.com/w_1456, /__u/stayyoung.substack.com/c_limit, /__u/stayyoung.substack.com/f_auto, /__u/stayyoung.substack.com/q_auto:good, /__u/stayyoung.substack.com/fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0c5cabc8-208b-4409-b25b-a07c10e8a400_1214x944.png 1456w" sizes="100vw" loading="lazy"></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><p>Berberine has one of the more substantial evidence bases of any supplement on this list, with research suggesting it may support healthy blood glucose and lipid metabolism through AMPK activation &#8212; a pathway also activated by exercise.</p><p>Research suggests berberine produces measurable improvements in fasting glucose and LDL cholesterol comparable to some first-line interventions in certain studies.<br><a href="https://pubmed.ncbi.nlm.nih.gov/18397984">Verify the study &#8594; pubmed.ncbi.nlm.nih.gov/18397984</a></p><p>If you&#8217;re on diabetes medication, this absolutely requires a conversation with your doctor first &#8212; berberine can compound blood-sugar-lowering effects.</p><h4>6 &#8212; MSM &#8212; for joint and connective tissue support</h4>
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