Your blood sugar can look perfectly normal for ten years while your body is quietly breaking. Because the number that actually moves first isn't glucose — it's the hormone your physical almost never measures: fasting insulin. (1/9) Here's the trap. At your annual physical they check fasting glucose and maybe A1c. Both can sit in the "normal" range while insulin resistance has been building for years. (2/9)

A 10-year follow-up of the CENTRAL and DIRECT-PLUS lifestyle trials (n=366) in Circulation: despite participants regaining the weight, every 10% reduction in visceral fat during the original intervention was independently associated with a 28% lower long-term risk of type (1/7) 2 diabetes. (2/7)

I'm a medical school professor. I taught this stuff for decades. And I still ended up with four chronic diseases at once.

I did everything I was told. I followed the food pyramid. I exercised. I got my annual checkups. (1/8) Then I was diagnosed with four diseases at the same time — type 2 diabetes, high blood pressure, gout, and abnormal cholesterol. The full picture of metabolic syndrome. These were diseases my own father didn't get until his 80s, and I was decades younger. (2/8)

Ask a longevity doctor: does walking after meals actually work? Yes — and here's the mechanism. (1/5) When you eat, your blood sugar rises. If you sit on the couch, it stays elevated longer. If you walk — even gently, even for 10 minutes — your muscles pull that glucose out of your blood and use it for fuel. (2/5)

The most counterintuitive sleep tactic in the literature: a HOT shower 60-90 min before bed drops your CORE temperature faster than melatonin, magnesium, or blue-light glasses. (1/7) Mechanism: hot water dilates peripheral blood vessels. You step out, radiate heat outward, and core temp drops 2-3F. That core-temp drop is the actual hypothalamic trigger for slow-wave sleep onset. (2/7)

The story of longevity science has always been: find the world's oldest people, study what they do, copy it. A new book in Nature this week argues the foundation underneath that story is rotting. (1/6) In "Morbid: Debunking Modern Longevity Science" (MIT Press 2026), epidemiologist Saul Justin Newman shows up to 72% of supposed Greek centenarians turned out to be pension fraud -- people drawing benefits in the names of dead relatives. (2/6)

What if extreme longevity is less about avoiding aging and more about aging cleanly? (1/6) Maria Branyas Morera lived to 117 -- the oldest verified person on Earth. A new multi-omics study in Cell Reports Medicine (Santos-Pujol, Esteller et al) profiled her genome, epigenome, proteome, metabolome, and microbiome.

What they found: (2/6)