Adult heart muscle has long been treated as tissue with very little capacity to replace cells lost during a heart attack. A new observation in living human samples complicates that picture: heart ...

Researchers identified a new cell type in zebrafish that helps stabilize the heart’s blood-vessel network during development ...

Scientists at Weill Cornell Medicine have identified a previously unknown cell type in the zebrafish heart that appears to ...

"Exercise is medicine" is a commonly quoted phrase. But as is so often the case with medications, more is not always better.

The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

An overactive thyroid is famous for making the heart race, but a new study suggests the damage may run deeper than a fast ...

A compound the body can make after eating pomegranates, walnuts, and some berries improved measures of heart function by up to 80% in animal models of a difficult-to-treat form of heart failure.

During a conservation project in Cape Cod's Wellfleet Bay, volunteers stumbled upon a remarkable two-headed diamondback ...