Articles

You don't need a hour at the gym to make a real difference — scattered five-minute bursts of movement may add up to serious health gains.

Most of us were taught that a workout has to be long to count. But a growing body of research is challenging that assumption, and the findings could change the way you think about fitness entirely. So-called "exercise snacking" — brief, informal bouts of movement sprinkled throughout the day — is showing real promise for improving cardiovascular health, blood sugar control, and muscle strength, especially for people who can't carve out a dedicated gym block.

Forget cholesterol for a moment. One fitness measurement may be the strongest predictor of how long you'll live — and most people have never even heard of it.

It's called VO2 max, and researchers say it may tell you more about your future health than your blood pressure, your BMI, or your resting heart rate. Here's what it is, why it matters more after 50, and what you can actually do about it.

The right movements can strengthen the muscles around your knees and help you stay active for decades to come.

Many people assume that achy knees are just an inevitable part of getting older — so they stop moving. But here's what the research actually shows: the right kind of exercise doesn't wear your knees down. It builds them up. In fact, staying sedentary may be one of the worst things you can do for long-term knee health.

A simple squeeze test may tell doctors more about your future health than your blood pressure reading.

You probably don't think much about how firmly you grip a jar lid or shake someone's hand. But researchers increasingly do. Studies published in major journals including The Lancet and the British Medical Journal suggest that grip strength — easily measured with a handheld device called a dynamometer — is one of the most reliable physical markers of overall health and longevity, particularly in adults over 40.

Research suggests the pace at which you walk may reveal more about your long-term health than you ever expected.

You probably think of walking speed as something that just happens — fast when you're late, slow when you're relaxed. But scientists are finding that how quickly you naturally move through the world may be one of the most telling signs of how well your body is aging. Here's what the research says, and what you can actually do about it.

The internet says seed oils are poison. Science says it's complicated. Here's what the research actually shows.

You've probably seen the headlines: seed oils are inflammatory, toxic, and responsible for everything from obesity to heart disease. But before you throw out your canola oil, it's worth asking what the evidence actually says—because the picture is far more nuanced than social media would have you believe.

They're marketed as health food, but your protein bar might have more in common with a candy bar than you think.

You grab a protein bar on the way out the door and feel good about it. It has 20 grams of protein, right? It must be healthy. But flip that wrapper over and take a closer look at the ingredient list. What you find might surprise you.

Researchers studying the world's longest-lived people keep noticing the same three drinks in their daily routines.

You might assume that living to 100 requires some impossible combination of perfect genes and radical discipline. But researchers who study centenarians around the world keep finding something surprisingly ordinary at the center of their daily lives: what they drink. Coffee, water, and red wine show up again and again in the diets of people who live the longest. Here's what the science actually says about each one.

Gastroenterologists say two simple food strategies may do more for your gut than any supplement on the shelf.

You've heard the word "probiotics" so many times it's practically background noise. But what does the science actually say about keeping your gut healthy — and what do the doctors who specialize in digestive health really recommend? The answers may surprise you.

New animal research suggests resistance exercise may trigger changes in fat tissue faster than scientists expected—here's what it could mean for your workout routine.

Most people assume you need months of lifting weights before your body starts to change in any meaningful way. But a new study is challenging that assumption. Researchers found that just seven sessions of resistance exercise were enough to start shrinking fat cells in mice—and the implications for human health are worth paying attention to.

Millions of Americans take vitamin D every day — but many may be reaching for a form that doesn't work as well as they think.

You've probably heard that vitamin D is important. But here's something most people don't know: not all vitamin D supplements are the same. The form on the label matters more than you might expect, and choosing the wrong one could mean your body isn't getting the full benefit you're paying for.

GLP-1 medications are changing lives — but dermatologists are now flagging a side effect that many women weren't warned about.

You've heard the headlines about GLP-1 drugs like semaglutide (Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound) helping people lose significant weight. What you may not have heard is what some women are noticing months into treatment: more hair in the shower drain, scalp tenderness, and changes to their nails. Here's what the latest data actually shows — and what you can do about it.

Research suggests that what you eat while taking antibiotics may matter just as much as the medication itself — and sugar could be making things worse.

Most people know antibiotics can upset your stomach. But new research suggests that eating sugar while you're on a course of antibiotics may deepen the damage to your gut microbiome — the trillions of bacteria that keep your digestion, immunity, and even your mood running smoothly. Here's what the science says and what you can do about it right now.

A new study tracked what happens inside the body during a full week without food — and the findings go far deeper than weight loss.

Most people think of fasting as a weight-loss tool, a quick reset, or something monks do. But researchers have now mapped, in remarkable molecular detail, what actually happens inside the human body when someone goes seven full days without eating. The results are surprising — and they raise new questions about what fasting can and cannot do for long-term health.

Most Americans fall far short of their daily fiber needs — and their bodies are paying the price. Here's what the science says happens when you start closing that gap.

You've probably heard that fiber is good for you. But do you know what it actually does inside your body — and how fast it starts working? The answer might surprise you. Changes can begin within days, not months.