Hair extensions may contain chemicals linked to cancer and reproductive issues
A new study finds a variety of hair extensions—from natural to synthetic—contain chemicals associated with cancer, birth defects and reproductive issues
What does it take to eat like an Olympian?
There’s more to Winter Olympians’ diets than calories—but for some, there are also lots and lots of calories
FDA won’t consider a new mRNA vaccine for flu despite the technology’s life-saving promise
The U.S.’s drug safety agency declined to review a next-gen flu vaccine that uses the same tech as the coronavirus shots
Top medical groups join forces to review vaccine science as CDC faces criticism
The American Medical Association is launching an effort to evaluate vaccine safety and effectiveness independently of U.S. government health agencies
Obesity increases risk of severe infections, study finds
A new study suggests that people with obesity have higher rates of mortality and hospitalization from a variety of infections from viruses, fungi, parasites and bacteria
Lindsey Vonn’s knees reveal the toll of elite skiing—and the body’s resilience
The decorated Olympic skier has had numerous injuries and a partial knee replacement but still plans to go for the gold at the 2026 Winter Olympics
What watching the Super Bowl does to your health
Watching sporting events like the Super Bowl can influence our brains and bodies—and not always in a good way
RFK, Jr., just claimed the keto diet can cure schizophrenia. Here’s what the science says
Preliminary studies suggest that a high-fat, low-carbohydrate diet could reduce schizophrenia symptoms in some people, but claiming it’s a cure is misleading, experts say
The next wave of GLP-1 drugs are coming—and they’re stronger than Wegovy and Zepbound
The upcoming drugs CagriSema and retatrutide target multiple gut hormones and could cause twice as much weight loss than current treatments. But experts wonder how much is too much
Brain swelling is one of measles’ nastiest side effects, and it’s happening in South Carolina
The South Carolina measles outbreak has triggered rare but serious brain swelling in some children
Menstrual blood can be used to detect HPV, hinting at broader uses
A new study shows that blood collected on a sanitary pad can be used for cervical cancer screening, opening the door to new diagnostics
These two habits are linked to many cancer cases
More than one third of cancer cases are preventable, a massive study finds