Heart disease

Surgeons transplanted a genetically modified pig heart into a human for the second time ever, and the recipient survived for six weeks

Sleep loss dampens brain regions that help manage our emotions

Clinical-trial data suggest that semaglutide, sold under the name Wegovy, slashed risk of heart attacks and other cardiovascular incidents in a trial

Here’s the science on whether naps have short- and long-term benefits for your health

A leading medical society says that the commonly used body mass index falls short, and it is time for alternative measures

As giant plumes from fires in Canada billow over the U.S., experts explain what smoke does to your health—and how to protect yourself

Researchers hope their work on racial health disparities will be a “call to action”

A neurologist explains why our bodies fare better when aligned with the natural light of standard time

Some studies suggest that the risk of cardiovascular problems, such as a heart attack or stroke, remains high even many months after a SARS-CoV-2 infection clears up

A growing mortality gap between Republican and Democratic areas may largely stem from policy choices

Scientists are just starting to unravel the disease’s long-term cardiac effects

Beatrice Alexandra Golomb, a professor of medicine at the University of California, San Diego, responds