Longevity

The number on your blood test nobody reads

The longevity risk hiding in your mouth

Do weight loss drugs extend your life?

The enzyme that eats your NAD

What cold plunges actually do and do not do

Why fish oil failed the Alzheimer's trials

Is depression an inflammatory disease?

Why being slightly heavier after 65 may help you live longer

The strength test that beats blood pressure

How chronic stress ages you 17 years faster

The mineral half of Americans are missing

Roughly 50% of US adults don't consume enough of it. Most people don't know this because the standard blood test misses it: only 1% of your body's supply lives in your blood. The rest is locked in bones and cells, invisible to routine labs. The risk rises with age, with poor diet, and with the medications most older adults already take. This week, we look at what the evidence actually shows.

The longevity risk no doctor measures

In May 2023, the U.S. Surgeon General issued a formal advisory declaring a national public health crisis. The World Health Organization called it a global health threat the same year. The risk is as deadly as smoking up to 15 cigarettes a day. One in two American adults has it. And almost no doctor measures it. This week, we look at what the evidence actually shows.

The 40% mortality drop nobody talks about

A 20-year study of 2,315 Finnish men found that those who used a sauna 4 to 7 times per week had a 40% lower risk of dying from any cause than those who used one only once a week. They also had 66% lower dementia risk and 50% lower cardiovascular mortality. The intervention is not a drug. It is not a supplement. And outside of Finland, almost nobody does it consistently. This week, we look at what the evidence actually says.

The biggest dementia risk factor is in your ears

In 2024, a Lancet commission of 27 leading dementia researchers reviewed every modifiable risk factor for cognitive decline. The single largest one was not diet, exercise, or alcohol. It was hearing loss. And in a landmark 2023 trial, hearing aids reduced cognitive decline by 48% in high-risk older adults over three years. This week, we look at what the evidence actually says, and why this might be the most underused longevity lever of the past decade.

The molecule your cells run out of by 50

Inside every cell in your body, there is a molecule called NAD+. It powers DNA repair, regulates the genes that control aging, and runs the energy production line in every mitochondrion you have. Between your 20s and your 60s, your NAD+ levels fall by roughly 50%. The question every longevity researcher is now trying to answer is whether you can put it back, and whether doing so meaningfully slows aging. This week, we look at what the evidence actually shows.

The official protein guideline is wrong for anyone over 50

The official protein recommendation is 0.8 grams per kilogram of body weight per day. For a 70kg adult, that works out to 56g of protein, or roughly the amount in two chicken breasts. This number was set decades ago using a method that asked one simple question: how little protein can you consume without becoming deficient? It was never designed to optimize anything. And for anyone over 50, the research now shows it is almost certainly too low.

A spoon of plastic in your brain...

In 2024, researchers analyzed the carotid artery plaque of 257 patients. More than half of them had detectable plastic in their arteries. Those who did were nearly four times more likely to have a heart attack, stroke, or die in the following three years. A separate 2025 study found that human brain tissue now contains roughly the equivalent of a plastic spoon's worth of microplastics, with concentrations up 50% in just 8 years. This week, we look at what the evidence actually says, and what you can realistically do about it.

The longevity myth your doctor still believes

For decades, the message was clear: a glass of wine a day is good for your heart. That single idea shaped how millions of people thought about alcohol and aging. The problem is that the research behind it has now collapsed under closer scrutiny. In January 2025, the U.S. Surgeon General issued a formal advisory linking alcohol to at least seven types of cancer. This week, we look at what the evidence actually says, and what it means for anyone who drinks.

The supplement your doctor never mentions

Creatine is the most researched supplement in sports science. It is also one of the most misunderstood supplements in longevity medicine. Most people over 50 have dismissed it as something young men take at the gym. The research tells a very different story. This week, we look at what creatine actually does in the aging body, what the evidence shows, and whether it belongs in your routine.

The hidden fire that ages you from the inside

Most age-related diseases look unrelated on the surface. Heart disease. Alzheimer's. Type 2 diabetes. Cancer. But researchers now believe they share a single underlying driver: a state of chronic, low-grade inflammation that builds silently over decades. They call it inflammaging. And understanding it may be the most important thing you can do for your long-term health.

The muscle loss that starts at 50 and kills at 70

Starting around age 50, your body begins losing 1 to 2% of muscle mass every year. By 70, that can mean 30% less muscle than you had at your peak. The medical term is sarcopenia, and most people have never heard of it until a fall, a fracture, or a hospital admission makes it impossible to ignore. This week, we look at why it matters, what the research shows, and the two interventions with the strongest evidence.

The cheapest longevity intervention you're ignoring

A study published in December 2025 tracked life expectancy county by county across the entire United States. Researchers looked at every major behavioral driver: diet, exercise, loneliness, sleep. Sleep stood out above all of them. The only thing that predicted a shorter life more reliably was smoking. This week, we look at what the evidence actually says, and why most people are getting this wrong in both directions.

The number that predicts how long you'll live

There is a single number that predicts your risk of dying — from any cause — better than whether you smoke, better than your blood pressure, better than a diagnosis of heart disease. Most people have never been told what it is. This week, we look at what it is, what the research shows, and the two things that move the needle most.

The glucose spike problem

You eat lunch. An hour later you can barely keep your eyes open. You reach for coffee, or something sweet, and eventually you recover — until it happens again at 4pm. Most people call this an energy crash. What it actually is: your blood sugar doing something it shouldn't, and your body scrambling to fix it.This week we look at what's really happening, why it matters beyond just feeling tired, and the two interventions with the strongest evidence for flattening the curve.