Why Lettuce Is Always Making People Sick

The cyclospora diarrhea outbreak isn’t an isolated incident. It’s part of a pattern of leafy greens wreaking digestive havoc.

Even Mild Sleep Deprivation May Lead to Weight Gain

A recent study suggests that not getting enough sleep increases the risk of weight gain, and thus of conditions like heart disease and type 2 diabetes.

Elite Young Runners Are Becoming Freakishly Fast. Welcome to ‘Trackflation’

Four-minute miles are almost routine. Middle schoolers are beating college runners. Inside the youth track boom that’s turning kids and teens into speed machines.

The CDC Has a Cyclospora Lab. DOGE Downsized It Last Year

“Based on simple math, these outbreak responses—which require rapid, timely responses—are going to be greatly diminished,” the former CDC lab director tells WIRED.

Do Face Masks Help With Wildfire Smoke? Yes, But More Is Needed

As wildfire smoke threatens air quality and safety for millions, here’s your playbook to keep your family safe from the damaging effects of smoke.

Everyone Thinks They Have the Diarrhea Parasite

Cyclosporiasis isn’t the only thing spreading across the US. So is anxiety about getting hit with it.

Lionel Messi’s Final World Cup—and the Death of Early Retirement

Argentina’s Lionel Messi was supposed to be done years ago. Now, sports science is helping soccer’s biggest stars rewrite the rules of aging.

The Explosive Diarrhea Outbreak Is About to Get Much Bigger

Official case counts likely capture only a fraction of US cyclosporiasis infections, and the outbreak is likely to get worse before it gets better.

What Are Fish Oil Supplements Good For? Here’s Your Crash Course

A large-scale clinical trial has shown that even long-term consumption of DHA—an omega-3 fatty acid found in abundance in oily fish—may not lead to improvements in cognitive function.

Food Preservatives May Increase the Risk of High Blood Pressure and Cardiovascular Disease

Aa large-scale study demonstrates that preservatives widely used in everyday processed foods may exacerbate common health risks.