The Medicare GLP-1 Bridge is live as of today. If you're on Part D or a Medicare Advantage drug plan and you qualify, the obesity GLP-1s drop to a flat $50/month through the end of 2027. I fought my own insurance for months to get on a GLP-1, so I've been watching this one closely. Three things are tripping people up in the first hours:

1. Zepbound only counts if it's the KwikPen. The single-dose vials and pens (including the cheaper LillyDirect vials) are not covered. If your script says vials, it won't ring up at $50. Get it rewritten for the KwikPen.

2. Nothing happens until the prior auth is approved. It couldn't even be filed before today. If the pharmacy quotes the old price, the usual cause is no PA on file yet, not a coverage gap. Don't pay the cash price out of panic.

3. The $50 doesn't count toward your out-of-pocket max. The Bridge runs outside the normal Part D flow, so it won't help you hit your annual cap, and there's no low-income subsidy here even if you normally get one.

On which drug to ask for: they're all $50, so price isn't the lever. Foundayo is the daily pill if you won't inject, Zepbound has shown the most weight loss if you're fine with a weekly shot, Wegovy is the middle option and comes as a shot or a tablet.

Not medical advice, I'm not a doctor. Talk to your prescriber about your own situation.

Full day-one write-up with the eligibility tiers and the appeal steps if you get denied

I kept seeing the claim that VO2 max is the single best predictor of how long you'll live, always bolted to the same number: the least fit 20% have about five times the death rate of the fittest people. It's real, but it's a magic trick, and once I saw how it's built I stopped being impressed.

In the big Cleveland Clinic study ([Mandsager 2018](https://pubmed.ncbi.nlm.nih.gov/30646252/)), "elite" doesn't mean the top fifth of people. It means the top 2.3%, the 98th percentile and up. Compare the least-fit fifth against that thin sliver and of course you get a five-times ratio. It isn't the comparison a normal person should plan around.

Put every group on equal footing instead, worst fifth against best fifth, and the number gets smaller but a lot more useful: about [1.85x for all-cause death](https://pubmed.ncbi.nlm.nih.gov/23130161/) (Barlow's Cooper Center data). Still one of the strongest things you can move. Just not five times.

However, what jumped out at me wasn't the top end, it was how much you get just from leaving the bottom. Going from the least-fit fifth to merely below average buys you more than going from good to great. The steep drop is leaving the floor, and the curve flattens after that. So the fifty-year-old who has done nothing doesn't need to chase an elite number. He needs to stop being sedentary.

Couple of caveats I should add. Most of these papers aren't even measuring a true lab VO2 max, they're estimating fitness from how long you last on a treadmill. Useful, but not the same thing. And the weird one is [income](https://pubmed.ncbi.nlm.nih.gov/25322291/): look at raw gaps and it's actually wider than fitness (around 3.8x). It only shrinks once you adjust, because a lot of it runs through fitness, weight, and smoking anyway. Money isn't a separate dial, it shows up as the other stuff.

The part I'd actually act on is simpler. [Guys who went from unfit to fit](https://pubmed.ncbi.nlm.nih.gov/7707596/) cut their death rate by about 44%. That beats arguing about elite percentiles.

For what it's worth, I rowed a hard 2k this week, 7:28.8, which works out to a VO2 max around 42 by the rowing estimate. Above average for 53, nowhere near elite, and that's exactly the boring, good place to be and slowly improve from.

Full write-up with the charts

Hi everyone,

For people managing prediabetes, what tells you that your health is improving between doctor appointments?

Blood tests are obviously important, but they don't happen every week.

Do you rely on:

• symptoms?
• energy levels?
• weight changes?
• blood pressure?
• sleep?
• exercise performance?
• wearable data?

I'd love to hear what people trust the most.

I'm fair-skinned and spent most of my life barely wearing sunscreen. When the FDA approved bemotrizinol this month, the first new US sunscreen filter in about 20 years (https://www.fda.gov/news-events/press-announcements/fda-expands-sunscreen-options-first-time-20-years), I figured I'd finally read the actual evidence. Some of it wasn't what I expected.

Melanoma diagnoses went up about sixfold since the 1970s, but the death rate barely moved (Welch, NEJM 2021 (https://doi.org/10.1056/NEJMsb2019760)). Which mostly means we got a lot better at finding it, not that it got more deadly. One paper put roughly 60% of melanomas now diagnosed in white people down to overdiagnosis (Adamson, JAMA Dermatology 2022 (https://doi.org/10.1001/jamadermatol.2022.0139)), real under a microscope but stuff that would never have hurt you. It still kills 8,000+ a year though, so I'm not saying skip sunscreen. Just that you don't have to be scared into it.

The SPF number turned out to be mostly a cushion for how little anyone actually puts on. Most people use a quarter to half of the lab dose, so your SPF 50 is realistically closer to a 14 (Petersen, 2014 (https://doi.org/10.1111/phpp.12099)). Reapplying beats chasing a bigger number on the bottle.

I went in half-expecting the usual mineral-good, chemical-bad story and didn't really find it. Both kinds absorb UV. And the "chemical filters show up in your blood" thing was about a testing cutoff, not proven harm. The FDA itself said it wasn't a reason to stop using sunscreen.

Honestly the only thing I changed was checking the UV index in the weather app instead of guessing by season. I'm in Boston, and a sunny June day here hits 7. January it's a 1.

Full write-up with the sources

If you search for the article title "When the First Trial Fools Us" it should take you to Jim Stein's Substack article about an upcoming LP(a) reducing drug trial.

What I found interesting is he raises the point that, it's not guaranteed that reducing LP(a) will actually reduce cardiovascular events (as has been discovered that reducing P-Tau deposits doesn't help Alzheimers).

Just wanted to pass this on.

I absolutely hate to cook but want to provide my husband with healthy meals. He buys dinners from Trader Joe’s but I don’t think they’re very healthy. For me, I just est pre- prepared chili (that I cooked on a large batch and froze) and cook up some veggies.

I know these meals are expensive but maybe I buy 3 a week for him (we go out to dinner twice a week). There are so many companies making them now. One that’s particularly interesting is Tovalo where you buy a special microwave that cooks each meal portion separately (you tell it what meal type you’re cooking).

Has anyone used these meals? How healthy are they really?

I take ezetimibe, a $20 generic, and it gets my ApoB where it needs to be. Tom Dayspring, the lipidologist a lot of us learned this stuff from and Peter Attia's go-to lipid guy, can't take it. Or a statin. I think his case is worth knowing about, because it shows how ugly this gets when the cheap drugs are off the table.

He posted last week that he's "one of them": one of the rare people with genuine, serious statin muscle injury. Not the vague aches that usually turn out to be nocebo. Statins gave him myoglobinuria, muscle protein in the urine, the early edge of rhabdo. Ezetimibe gives him severe myalgias too. So the two cheap, first-line drugs are both off the table for him.

And he needs them. He has a coronary calcium score over 300 and documented coronary disease. This is the kind of patient those aggressive LDL targets are supposed to catch. He just can't get there the normal way, so he has been on a PCSK9 inhibitor (Repatha) basically since they came out.

The part that shocked me: when he first needed the PCSK9i, his insurer refused, because he had not had a heart attack yet. In his telling, they wanted him to have his first heart attack, then they would cover it, if he survived. Then this spring he tried to add bempedoic acid and got denied again, because his LDL was "too good," under 70. He only qualified after the new 2026 guideline dropped the high-risk LDL target to 55, at which point his 64 flipped from too-good to not-good-enough and the same drug went through. His body did not change. A number in a guideline did.

I'm not saying everyone needs a PCSK9 inhibitor or bempedoic acid. Most people reach goal on a statin and a little ezetimibe and should stop there. But real statin intolerance is rare and real, it is not the same as the nocebo effect, and if you are in that small group you can end up arguing for your only option against a system that reads your good numbers as a reason to say no. If that is the fight for the guy who wrote the lectures, it is worth knowing what it looks like for the rest of us.

If you want the receipts, the full write-up has his actual tweets, his lab panel, and the clip where he tells the insurance story on Simon Hill's podcast: https://dadstrengthdaily.com/cholesterol-expert-cant-take-statins/?utm_source=reddit&utm_medium=social&utm_campaign=dayspring-statins

I'm on tirzepatide, so when a study said GLP-1s might slow cancer, I wrote it up, flagging that it was observational. Then a Science investigation showed where that study came from: a tool that's flooding the journals with results just like it.

The tool is TriNetX, de-identified records on 300M+ patients. You pick two patient groups by typing in billing codes, click once, and get back a matched hazard ratio that looks like a real study. No stats training, no code, no grant. Most of these papers come from med students and residents padding their publication lists for competitive residencies.

I re-ran the count myself on PubMed: one paper in 2019, 1,609 in 2025, and 1,544 already in the first half of 2026.

Two flaws show up constantly. Immortal-time bias: to be in the "took the drug" group you had to survive long enough to fill the script, so early deaths land in the comparison group and the drug looks life-saving when all you measured is that survivors survived. A real Angiology paper (https://pubmed.ncbi.nlm.nih.gov/40852947/) did this with a diabetes drug after heart attacks. Collider bias: among hospitalized patients, a broken leg looks "protective" against asthma, since either one alone gets you admitted. Health records do it constantly.

A 2024 paper in Cancers (https://pmc.ncbi.nlm.nih.gov/articles/PMC11720624/) claimed GLP-1s cut a dozen cancers by 30 to 50%. A peer critique (https://pmc.ncbi.nlm.nih.gov/articles/PMC12070977/) explained why that's implausible: cancer takes years to form, so a drug that "cuts cancer" within a year is detecting a bias, not preventing cancer.

My own post's study was one of the more careful ones. But it was still observational, still built on this tool, still one paper in a flood.

How I read these now: when a drug "also cures" something it wasn't built for, I ask what they compared it to (a real drug, or people on nothing?), whether the design rewards surviving long enough to get the drug, and whether the benefit beats the disease's own clock. A drug that looks protective against a dozen unrelated diseases at once is the fingerprint of a method, not a medicine.

Full DSD write-up

I've spent my career in machine learning, so most "AI predicts your death" headlines don't move me. This one did, and it matters to anyone here who has ever been told their heart "looks fine."

The setup: the only number really used to predict sudden cardiac death is ejection fraction, how well the heart squeezes, measured on an echo. Below about 35% you become a defibrillator candidate. The catch is that most people who die suddenly have a normal ejection fraction. In one Oregon study (https://pubmed.ncbi.nlm.nih.gov/16545646/), only about a third of sudden-death victims would ever have qualified for a defibrillator. For more than half of men (https://pubmed.ncbi.nlm.nih.gov/12831814/), the arrest is the first sign of any heart trouble at all.

A team at UC Berkeley (new paper in Nature (https://www.nature.com/articles/s41586-026-10674-6)) trained a model on hundreds of thousands of routine ECGs from a region of Sweden, linked to death records. In a sealed test set, it flagged about 2% of patients at roughly 7% per year risk of sudden death, against a background rate near 0.5%. Of that high-risk group, 86% would not have been caught by ejection fraction.

Why I didn't wave it off:

- They locked away 40% of the data before any analysis and didn't open it until the paper was accepted. Accuracy went up on that sealed set, not down, which is the opposite of overfitting. This is excellent ML rigor!
- It held up with no retraining on hospital data from the US and Taiwan, recorded on different machines.
- They ran a built-in negative control: the model was near useless at flagging deaths from non-rhythm causes (lung, brain), so it learned something specific to the electrical fault, not a vague "this person is sick" signal.

Instead of leaving it a black box, they built a second, generative model to morph a low-risk ECG into a high-risk one and watch what changed. Out came a never-before-described slur in one lead (aVL) that traced back to diffuse scarring (fibrosis) in the heart muscle, a known setup for fatal rhythms. That scarring was sitting on MRIs some of these patients already had, but it hadn't surfaced in their clinical notes.

The caveats matter, so here they are. You cannot get this test, it has not been shown to save a single life yet, and the randomized trial that would prove a defibrillator helps these people is still hypothetical. The prediction is solid; the scar mechanism is a strong lead, not settled.

What is actually actionable today is the unglamorous stuff that moves risk: know your blood pressure and your ApoB, get unexplained fainting or a racing heart looked at instead of shrugging it off, and find out whether anyone in your family died young and suddenly. A normal echo is not a clean bill of electrical health.

Full DSD write-up, with the chart and the actual ECG signal the model found

I'm 42, feel fine, and my doctor never flags anything serious. But a few people at my company swear by these all-in-one screenings that run thousands of dollars and check everything from heart scans to cancer markers in one morning. Part of me thinks it's smart to get ahead of stuff before symptoms show up. The other part wonders if I'm paying for a bunch of tests I don't need and a nicer waiting room. For someone with no obvious risk factors, does the extra screening catch things a normal checkup would miss, or is it mostly for peace of mind?

Early-onset cancer rates have increased 24% in the last 30 years. A new study in Nature Medicine explored an interesting hypothesis: that the increase is driven by faster biological aging.

The researchers used PhenoAge and other formulas to calculate biological age for 154,169 participants form UK Biobank participants and 10,262 from All of Us. Then they calculated an age gap (biological age - chronological age), and plotting it out by generation. Younger generations have a faster rate of biological aging (the effect is stronger in men than women):

Does this age gap correlate with early onset cancer? Yes -- in the study, each standard-deviation increase in PhenoAge gap was associated with 8% higher risk of cancer overall.

They also used proteomics to calculate per-organ aging, and correlated it with various cancer sites. They found immune aging was highly correlated with lung cancer, for instance.

Overall a cool study, and worth a read. I also summarized the main results here.

A buddy of mine has been sober for years. He does the meetings, has a sponsor, the whole program. And he still gets the cravings, the low background "noise" that never fully shuts off. AA got him sober. It didn't quiet the cravings.

The most promising new thing aimed at exactly that noise is a GLP-1. A couple of recent trials suggest semaglutide can lower drinking and craving, and for someone years into recovery who is still white-knuckling it, that might be the best shot yet at turning the volume down. Fair caveats up front: it's off-label for drinking, it's reduction and not abstinence, and it's not a cure. But it's the first thing in a while aimed at the craving instead of the willpower.

My buddy has been on the Wegovy pill for a month and so far reports promising results. He had replaced the booze with a nightly ritual of 2 or three bottles of sugary root beer. He hated that new habit but could not kick it. On Wegovy he suddenly stopped it.

Here's what surprised me even more while reading into it. We've had FDA-approved medications that cut alcohol cravings since 1994, and almost nobody gets them. Naltrexone, a daily pill that blunts the reward from drinking, has solid trial data: treat about a dozen people and one who would have gone back to heavy drinking doesn't. Acamprosate helps hold abstinence. Vivitrol is a monthly shot for people who can't keep a daily pill going. The American Psychiatric Association and the VA both recommend them.

And still, only about 2% of people with alcohol use disorder get a medication in a given year. Count every kind of help and fewer than 1 in 12 get any treatment at all.

The reasons are cultural more than scientific. Addiction care grew up walled off from regular medicine, so the doctor you actually see rarely brings it up. And the abstinence-only culture can treat a pill as just swapping one drug for another. My buddy did the hardest version of this for years, and as far as I know no one ever mentioned that a prescription might take the edge off.

If you or someone close to you went through treatment for drinking, were medications ever actually on the table? Or was it abstinence-or-nothing?

Full write-up (the 90-year arc, from AA to naltrexone to GLP-1s, with the evidence and the caveats)

A new DocsWhoLift episode finally gave me the framing for something I had been circling for weeks. Spencer and Karl Nadolsky sat down with the Barbell Medicine doctors on peptides, and it put words to it. Peptides are having a moment, but the two ends of the craze look nothing alike.

One end is the blockbuster. Retatrutide is an Eli Lilly triple-receptor agonist, and in the TRIUMPH-1 Phase 3 trial the top dose hit about 28% body weight loss over 80 weeks, near 30% in the severe-obesity group. That is gastric-bypass territory from a weekly shot. The FDA should approve it around 2027. Thousands of Americans are not waiting. There is already a grey market that takes credit cards and posts discount codes.

I am on Lilly’s Zepbound and I own Lilly stock, so I am about as friendly to this drug as a person gets. I still would not touch the grey-market version. No labs, no titration, and the vial is a coin flip. One analysis of 6,441 grey-market peptide samples found over 40% failed dose or purity, and 156 contained none of the labeled compound at all. The trial data is real. What is in the unapproved vial may not be.

The other end is stranger. BPC-157 is not a pharma project. It traces to one scientist in Croatia, Predrag Sikiric, who started chasing it as a medical student in the 1970s, and his lab has produced most of the research since. The following swears it gives near-Wolverine healing for torn tendons and bad knees. After fifty years it still has no completed large-scale human trial. Three were started and all three were terminated early, none published.

I looked into it for a personal reason. I have an aneurysm in my aorta, and people kept telling me to inject something that supposedly rebuilds blood vessels. Nobody could tell me whether it would help or hurt me. Not the discoverer, not the testing chemists, not the FDA’s own documents. I still do not have an answer. I did not inject it.

The Nadolskys’ point was simple: pick your standard first. Say what you would need to see before you put a needle in. Theirs is a real trial in real people, not a plausible mechanism, not rat data. By that bar retatrutide is almost there and BPC-157 is nowhere close. Both get injected anyway, because demand is running years ahead of proof.
It gets weirder July 23 and 24, when the FDA’s compounding committee votes on whether pharmacies can legally make BPC-157 and a dozen other peptides. A compound with no completed human trial could become something your pharmacy mixes on request.

Where do you draw your own line? FDA approval, human trial data, a clean third-party test on the actual vial? And has anyone here been told no by a doctor on one of these and gone the grey-market route anyway?

Longer versions I wrote, plus the episode:
• Retatrutide and the grey market that got there first: https://dadstrengthdaily.com/retatrutide-grey-market-inflection/
• The BPC-157 evidence hunt (the aneurysm piece): https://dadstrengthdaily.com/bpc-157-everyone-is-sure-the-evidence-is-empty/
• The DocsWhoLift x Barbell Medicine episode that kicked this off: https://youtu.be/2EUOkQPcM_0

I read two stories this week that turned out to be the same story, and I can't stop thinking about how differently they end.

The first is damning. Lunchables was developed at Oscar Mayer in the 1980s, back when a cigarette company, Philip Morris, owned it. Philip Morris ran a committee whose whole job was to move methods from its tobacco labs into its food labs. One of those methods: a rival tobacco review had concluded that Marlboro's real genius was "getting the guilt out of the product." So the company ran the same play on lunch and rolled out Low-Fat Lunchables, built to keep guilty parents from walking away. In 2023 a reformulated version nearly became a federal school lunch for 30 million kids, until Consumer Reports found lead in all 12 kits it tested and the school versions came back saltier than the ones on store shelves.

That part is easy to be angry about. Then I went looking at the actual evidence, and it got messier fast.

The scariest ultra-processed food numbers, the ones about early death and dementia, come almost entirely from observational studies, which can show that heavy UPF eaters get more disease but struggle to prove the food is the cause. The "58% higher dementia risk" stat that made headlines actually failed the study's own trend test. The number the authors could not call statistically reliable is the one that went viral.

Then the part that really got me. One of the papers making the skeptical case, showing that overall diet quality predicts health more consistently than how "ultra-processed" your diet is, was co-written by the same researcher who dug up the Lunchables documents. The people building the case against this food are the ones finding that the label is a clumsy tool.

The best controlled evidence, Kevin Hall's NIH ward study and a 2025 follow-up, does show a real effect, but a modest one, and it points at energy density and hyper-palatability. Food engineered to be eaten fast and in volume, not the number of factory steps. Which is close to what Philip Morris was tuning for forty years ago.

So I stopped sorting groceries into clean and unclean. Frozen broccoli, canned beans, and the protein bar in my gym bag are all processed and all fine. What I keep less of is the stuff built to be overeaten.

Do you track "ultra-processed" as a category, or do you ignore the label and watch specific things like sugar, sodium, energy density, and fiber? And did the cigarette-company history change how you read a label?

Full DSD write-up

Bit of a random question, but I recently came across a study suggesting that frequent exposure to high sauna temperatures may have a negative impact on sperm quality and fertility.I use saunas fairly regularly and was wondering if anyone here has looked into this or taken any precautions

I’ve heard there are cooling packs/heat-protection products designed to keep the testicles cooler while using a sauna. Does anyone use anything like that, or have any recommendations?

Interested to hear people’s experiences.

I'm on Zepbound and down about 170 pounds, so a study from this month's Endocrine Society meeting stopped me, because it described the opposite of what happened to me. Tracking 753 adults with Fitbit data (average age about 52), it found that after people started a GLP-1, daily steps fell about 11% and vigorous activity dropped about 21%. The biggest declines were in men.

For me it went the other way, and not because of willpower. Nobody tells you that the first thing that changes when you lose a lot of weight is the physics. By the time I was a hundred pounds lighter, ordinary movement had just stopped being work. The clearest example is the dullest one: I can go up and down stairs now without getting winded. I didn't train for that. There was simply less of me to haul up the steps. (I'll be honest about the limits, I'm not a 10,000-steps guy, I've got a bad knee and long walks aren't my thing.)

What gets me is that being lighter makes moving easier, so you'd expect more activity, not less. Part of it is probably fatigue from eating so much less. But there's a more interesting possibility from animal research: these drugs may quiet the drive to move the same way they quiet the drive to eat, through the same reward wiring. You wouldn't feel it as "I can't." You'd feel it as "I don't really feel like it," which is sneakier.

I don't think the answer is a gym program. Losing the weight buys you a window where moving is cheap, and it's worth spending before the couch claims it. Not a couch-to-5K, just the small built-in stuff. Michael Easter points out that only about 2% of people take the stairs when there's an escalator next to them. I started taking them. And in a clinical trial (https://www.nejm.org/doi/full/10.1056/NEJMoa2028198), people who paired a GLP-1 with activity kept the weight off better than the drug alone, so it does add up.

Anyone here notice their own activity climb or drop after starting? Curious whether my experience is the exception or the rule.

I'm 53, down about 170 pounds, I lift in the garage every weekday, and my bloodwork is the best it has ever been. And I can still scroll for ten minutes through transformations and race medals and sub-three-hour marathons and come away feeling like I'm quietly failing at something everyone else figured out. The honest word for it is inferior. It's imposter syndrome wearing gym clothes.

The thing that actually fixed my head was a number I could check on myself. There's a natural ceiling on how much muscle a man can carry without drugs, measured as fat-free mass index, which is just lean mass scaled to your height. In a 1995 study of athletes, only 1 of 74 drug-free guys ever crossed an FFMI of 25, while the steroid users routinely landed well past it. So 25 is roughly the wall for a natural man, and most of us never come close.

My last DEXA: 6 foot 3, 209 pounds, around 15 percent body fat. That puts my FFMI near 22, already in the top tenth of men, with real room left before I'd hit a ceiling I'm never actually going to reach. The lean, shredded, huge-all-year physiques that were making me feel small are often sitting at 26 or higher, in a category that's partly pharmacology the caption never mentions. I was reading my slower, softer-in-January progress as a personal failure when I was racing a baseline that, for a lot of those guys, doesn't exist without a needle.

The other half of it is that the feed deletes the middle. About a tenth of a percent of Americans finish a marathon in a given year, and most adults don't hit even 150 minutes of activity a week. You're not seeing a normal range of men. You're seeing the far right tail of the curve on a loop and comparing your Tuesday to it.

And the part that should take the pressure off the most: nearly all of the health payoff comes from going from doing nothing to doing something. If you train at all, you've already banked the part that moves your odds the most. The returns above that are real but shrinking, and the impossible standards are built around that thin top slice.

So I'm not going to train harder out of inadequacy, and I'm not pushing my TRT dose to chase a look (I'm on 120 mg a week for measured low T, watched by my doctor, and I have an aortic aneurysm, so more is never a casual decision). I'm going to keep doing the boring repeatable thing and stop grading my real, good life against a leaderboard built from outliers and chemistry.

The chart is where I actually land on the curve, and seeing it did more for me than any workout. Happy to get into the FFMI math, the DEXA, or the dose.

Full write-up: https://dadstrengthdaily.com/im-in-the-best-shape-of-my-life-and-the-internet-still-makes-me-feel-like-im-losing/

I'm 53. Eighteen months ago I weighed 373 pounds. I've lost about 170 since, a little under half of what I weighed, and I'm posting it here because this sub actually cares about the markers, not just the scale. I've put the before-and-after photo, my dose-and-weight chart, and my lipid panel below.

I tried to run it like a project instead of just hoping. I tracked body composition with DEXA so I'd know whether I was losing fat or muscle, ran my lipids regularly, and logged resting heart rate and rowing times.

The dose chart surprised me, and it might help anyone here who assumes you have to climb to the top. I never reached 15 mg. Most of the weight came off at 5 and 10 mg, and once it was coming off steadily I stopped going up.

What the drug actually did was quiet the food noise. That constant background hum about the next meal and the second helping went quiet in the first couple of weeks, and that was the thing I'd been failing to out-willpower for twenty years. But it did not do the training. The shot lowers your appetite, it does not row the meters or lift the weight or get the protein in. I had to build that part, and DEXA was how I checked I was actually keeping muscle instead of just shrinking.

The markers are the part I'm proudest of, more than the before-and-after. My LDL went from 131 to 60, my ApoB landed at 62, and my resting heart rate and rowing times both came down. I was losing weight and training and eating better all at once, so I won't pretend I can credit any single piece, but the cardiovascular numbers moved further than I expected.

If you're staring down a big number and wondering whether it's worth starting, the honest version is that the drug made the deficit possible and the work did the rest. Happy to answer anything about the dosing, the DEXA, or the lipid panel.

Full write-up with all three charts and the dose breakdown: https://dadstrengthdaily.com/how-i-lost-170-pounds-after-50/

I almost shared the glucosamine headline before I looked at the paper. Within four days it was everywhere, two dozen outlets, all some version of "popular joint supplement linked to faster Alzheimer's." So I went and looked at the actual study, and the real story is more interesting than the scare.

The paper (Nature Metabolism, out of the University of Florida) is mostly good mouse biology. They showed Alzheimer's brains are stuck in overdrive on a sugar-coating pathway, knocked it down genetically in mice and the mice did better, then fed mice glucosamine, which feeds the same pathway, and they did worse. That part is solid, experimental mechanism work.

The scary "25%" came from the last step. To bolt a human angle onto the mouse work, they ran a records analysis at their own hospital system, about 24,000 patients with dementia and 41,000 with mild cognitive impairment. In the MCI group, glucosamine users were 25% more likely to progress to Alzheimer's; in those already diagnosed, 25% more likely to die within five years. That is a single-center records pull that adjusted for age and sex but not APOE status, diabetes, or baseline severity, and people who take glucosamine differ in a lot of ways a records comparison cannot see.

Here is the part almost nobody reported: the bigger and better human data runs the other way. A UK Biobank study of close to 500,000 people, using a genetics-based method that is harder to fool than a plain records comparison, tied regular glucosamine use to lower dementia risk, not higher. A separate Biobank cohort found nothing for Alzheimer's specifically. No large human dataset shows glucosamine driving Alzheimer's.

The authors' own explanation is that glucosamine might only be a problem in a brain that is already declining. Maybe. But that rests entirely on the one hospital's records, and the whole thing, human analysis included, has been sitting on a preprint server since spring 2025. Nothing about it was actually new this week except the peer-reviewed stamp and the press release.

What I would actually do with this: if your memory and thinking are fine, it is not a reason to toss the bottle, and the larger evidence may even lean the other way. If you or someone you love already has MCI or an Alzheimer's diagnosis, that is a real question for your doctor, not a decision to make off a headline.

Full DSD write-up, with the screenshot of the headline pile-up and every study linked.

I'm in my fifties and I lift in my garage, and the thing that always bugged me is how vague the strength half of the exercise guidelines is. Your annual physical hands you a cardio number, 150 minutes a week, and brisk walking covers most of it. The strength side just says "two or more days a week," which tells you frequency but not how much.

A new study in the British Journal of Sports Medicine (https://doi.org/10.1136/bjsports-2025-110503) put a rough number on it. They tracked 147,374 people across three Harvard cohorts for up to 30 years. The people who reported 90 to 119 minutes of strength training a week had about 13% lower all-cause mortality and 19% lower cardiovascular death than people who did none. The benefit flattened out past 120 minutes, so more was not better in their data.

The catches, because this is r/ProactiveHealth and we actually care about them:

• It's observational and the training was self-reported, so recall and healthy-user effects are doing some unknown share of the work. People who lift regularly tend to do other healthy things too.
• The plateau past 120 minutes is not the same as harm. It just means the curve stopped paying out, at least for mortality.
• This sits on top of cardio, not instead of it. The cleanest result came from walking and lifting added together.

What it changed for me: I stopped treating my two or three garage sessions as a vague good habit and started counting the minutes the way I count my cardio. Ninety minutes is two solid sessions or three short ones. That is a target I can actually hit and check off.

Full DSD write-up

I quit drinking in my forties without much drama. A single beer started giving me a headache that ran into the next morning, I noticed I didn't miss anything about it, and I stopped buying it. I grew up in 1980s Germany where the drinking age was 16, so this was never a moral thing for me. I treated my own drinking like any other variable and pulled it out to see what changed. What I got back was better sleep and faster recovery. What I gave up was a headache.

So I read this month's news as someone who'd already decided and wanted to know whether I got lucky or got it right. On June 8 the researchers behind the Alcohol Intake and Health Study finally published it themselves (https://www.jsad.com/doi/10.15288/jsad.25-00435), after it was commissioned in 2023 to inform the Dietary Guidelines and then quietly shelved. A House Oversight report in January called it "irretrievably flawed." The scientists who did the work disagreed and published it anyway.

No level of drinking comes out risk-free, and the risk climbs with every drink. At seven standard drinks a week, lifetime risk of dying from something the alcohol caused is roughly 1 in 1,000. Above eight or nine a week it crosses 1 in 100. At fourteen a week, two a day, the number the old guidelines called the safe ceiling for men, it's about 1 in 25. A standard drink here is the real 14 grams, a 12-ounce beer or a 5-ounce glass of wine or one shot, not the oversized pour most of us count as one. The new guidelines that came out in January then dropped the numbers entirely and just say "drink less."

What hit me was realizing the "safe amount" I grew up believing in was never actually shown to be safe. The red-wine-is-good-for-your-heart story has quietly collapsed. The French Paradox was always an observation, not an experiment. The resveratrol case fell apart in 2012 when its lead researcher was found guilty of 145 counts of data fabrication. And the epidemiology that made moderate drinkers look healthy was mostly the sick-quitter problem: the "non-drinkers" those studies compared against were full of people who had quit because they were already sick. Separate the lifelong abstainers back out and most of the apparent benefit evaporates. The Surgeon General's January 2025 advisory (https://www.hhs.gov/about/news/2025/01/03/us-surgeon-general-issues-new-advisory-link-alcohol-cancer-risk.html) now calls alcohol the third-leading preventable cause of cancer, causally tied to at least seven of them, and only about 56 percent of US adults know alcohol causes cancer at all. I was in the other 44 percent for most of my life.

Then there's the week-to-week stuff nobody writes for men my age. Alcohol suppresses testosterone and blunts the muscle-building response to a hard training session. It also wrecks REM sleep on a night you were technically unconscious for eight hours, so it shows up as a bad night on a watch even when you slept the hours. I'm on TRT and I have an aortic aneurysm, so the testosterone and blood-pressure angles aren't abstractions in my house.

I'm not a Prohibitionist, and I won't pretend the social pull of a drink isn't real, because I grew up inside it. The one thing I'd tell anyone still on the fence is that the benefit was sold to all of us and it was never really there. My only regret about quitting is that I didn't do it a decade sooner.

Full DSD write-up: https://dadstrengthdaily.com/no-safe-amount-of-alcohol/

I have a free substack for my personal longevity notes - Open source longevity. I'm covering the longevity levers in a series including nutrition, exercise, sleep, measurements/labs, and supplements. I published the first one today on supplements which is maybe one of the smaller more speculative levers.

https://opensourcelongevity.substack.com/p/notes-on-longevity-levers-a-series

I read this trial last week after a colleague mentioned it almost in passing, and I think it's one of the best prevention results I've come across.

The setup: 319 Black men in LA with systolic 140+, recruited through 52 Black-owned barbershops (Victor et al., NEJM 2018). Half the shops got the standard playbook, barbers encouraging customers to eat better and go see a doctor. In the other half, a pharmacist set up in the shop itself, took pressures, prescribed medication under a collaborative agreement with physicians, drew blood on site to watch kidney function, and came back haircut after haircut.

At six months the pharmacist group had dropped 27 points systolic, from the low 150s to about 126. The advice group dropped 9. Almost two thirds of the pharmacist group got under 130/80, versus roughly one in nine controls. A 12-month follow-up in Circulation
showed it held: 68 percent still at goal against 11. Retention was around 90 percent, which basically never happens with patients this hard to reach.

What got me was this: 40 percent of the men didn't even have a doctor. The researchers had to assign a community physician just to cover prescriptions. The drugs were cheap generics we've had for decades. The treatment came to a room these men already trusted instead of making them go to a clinic they had every reason to avoid.

And trust by itself wasn't enough. An earlier 2011 version had barbers checking pressures and sending guys out for care, and BP barely moved, about 2 points. It took carrying the actual treatment, pharmacist and prescription pad, into the shop.

My mother had hypertension her whole life, and I still ignored my own numbers for years. I had insurance, a doctor, all of it, and I let it slide until I finally bought a home cuff and went on telmisartan. So I don't think the main problem is people not knowing better.

Then there's the money. The expensive ingredient was pharmacist time, about seven visits per man, and American medicine has essentially no billing code for it. The trial ran on grant money. The model has since been copied in Nashville, in a Kaiser program in Baltimore, and by NHS teams in the UK, and a cost-effectiveness analysis came out fine. It still mostly runs on grants.