Girls are twice as likely as boys to be diagnosed with depression, and researchers in London have now uncovered clues as to why.

After recent scary headlines about the things we eat, ranging from Girl Scout Cookies and sugar-free slushies to protein ...

A new study says that married men may have triple the risk of obesity, compared to unmarried men, and that marriage seems to ...

Two new studies suggest cannabis carries very serious heart health risks, including that people under 50 who use it are more than six times as likely to have a heart attack, compared to nonusers.

Public opinion about vaccines affects furry friends too. We asked veterinarians and other experts to explain the most common misconceptions about animal vaccines.

Critics say a new, broader definition of high-risk plaque opens the door to more tests, diagnoses, and invasive procedures, steering us down a potentially harmful path.

Editor’s note: This story was updated March 24 with new data on the growing number of measles cases. March 12, 2025 – Health officials are worried that measles cases in at least 12 states ...

Feb. 28, 2025 — If you’re like many Americans, you probably have a fitness tracker or a smartwatch on your wrist or finger. As of 2023, a little more than a third of the population uses ...

Editor’s note: This story was updated March 24 with new data on the growing number of measles cases. March 10, 2025 — That cough or runny nose might just be a cold – but what if it’s ...

Feb. 27, 2025 – About 3 in 10 people will develop a substance use disorder in their lifetime. A new test can predict how likely you are to become one of them – and provide a personalized ...

Doctors don’t always see obvious signs of cancer growth after a diagnosis. They need to hunt for clues. One way they can do that is with a carcinoembryonic antigen test. It measures a protein ...