r/ProactiveHealth

Over the past few years we've seen a lot of interesting longevity research. Most of it isn't about living to 150 or reversing aging overnight. Instead, it's made up of small steps that slowly move the field forward.

One study that really caught my attention looked at something surprisingly simple: omega-3, vitamin D and regular exercise.

Researchers followed 777 older adults for three years. They measured biological aging using epigenetic clocks, which estimate biological age based on DNA methylation rather than your birth date.

The results weren't dramatic, but they were real.

People taking omega-3 showed a small slowing of biological aging, and the combination of omega-3, vitamin D and exercise appeared to produce an even greater effect. Depending on the epigenetic clock used, the difference was roughly equivalent to slowing biological aging by about 3 to 4 months over the course of three years.

That probably won't make headlines.

But maybe that's exactly why it's important.

Not every breakthrough in longevity will look like a miracle. Sometimes progress comes from small improvements that are measurable, repeatable and tested in real people.

There are several other studies and technologies I'd love to discuss next, including:

• ER-100 and the first human cellular reprogramming trial.
• Senolytics and the idea of removing senescent cells.
• AI helping design therapies for aging.
• Epigenetic clocks and how we actually measure biological age.

Which one would you want to dive into next?

A study published July 1 in The Lancet, from the NCD Risk Factor Collaboration, pooled 110 national surveys covering close to a million people across seven countries from 1990 to 2024. They compared blood pressure and non-HDL cholesterol between adults with obesity and adults at a normal weight, then tracked how that gap moved over three decades. For adults over 40, it has nearly closed. In the heaviest group, BMI 35 and up, older adults with obesity now have non-HDL numbers about the same as their normal-weight peers, sometimes a little lower.

The authors credit wider, more intensive statin and blood pressure treatment in heavier people, not diet or weight loss. Older US work says the same thing. Between the early 1990s and late 2000s, average total cholesterol fell from 216 to 197 while the share of adults on a lipid-lowering drug went from 1.6 to 12.5 percent, and researchers estimated the drugs, not diet, accounted for about half the drop.

Two guideline changes did a lot of this work, which is the part I'd want anyone tracking their own lipids to know. In 2013 the ACC/AHA dropped the old cholesterol targets and switched to overall risk, and that single move made about 12.8 million more adults statin-eligible overnight. Heavier people crossed the line more often, because obesity drags the risk score up through blood pressure, glucose, and lipids. Then in March 2026 they bolted a 30-year risk estimate onto the 10-year one, built to catch younger people whose 10-year number looks harmless but whose lifetime risk is high. One analysis put that expansion near 20 million more Americans.

One thing to be clear about: this is non-HDL and blood pressure only. It says nothing about Lp(a), and it doesn't touch the metabolic problems that come along with excess weight. Real harm reduction on two numbers, not a green light.

Curious what this sub thinks, especially anyone who watched their own non-HDL or ApoB drop on a statin without much change on the scale. Did the number move the way you expected?

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

Came across an interesting study about beetroot juice and nitric oxide production.

Research suggests beetroot juice may help increase nitric oxide levels, which can support circulation, exercise performance, and healthy blood pressure. A lot of athletes and fitness enthusiasts seem to use it as a natural pre-workout for endurance and blood flow support.

Not claiming it’s a miracle drink, but the science behind dietary nitrates and cardiovascular health is pretty interesting.

Has anyone here tried beetroot juice consistently? Did you notice any difference in energy, endurance, or recovery?

PMID: 26653541

Ever heard of autophagy? It’s basically your body’s built-in “clean-up mode” that helps remove damaged cells and recycle them for energy.

As we age, this process naturally slows down, which can lead to a buildup of cellular “junk” that may affect how our bodies function over time. Supporting autophagy is often linked to better cellular health and resilience.

This isn’t magic or a quick fix just a fascinating biological process your body already does on its own.

Curious to hear your thoughts: Have you looked into ways to support autophagy (like fasting, exercise, or diet), or is this new to you?

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 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

Source: https://www.nytimes.com/2026/06/09/well/alcohol-health-risks-study.html