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 ...

Millions of people live with atrial fibrillation, a racing, uneven heartbeat that can leave you exhausted and scared. Yet it has been at least 30 years since a new drug for this common rhythm problem ...

At Valparaiso University, to step inside the human heart is not merely an exercise in undergraduate interpersonal relations or a poetry review, but virtually to infiltrate the powerhouse of the body.

Pioneering research by experts at the University of Sydney, the Baird Institute and the Royal Prince Alfred Hospital in Sydney has shown that heart muscle cells regrow after a heart attack, opening up ...

From left to right - the cell in the initial frame is from a 55-year-old donor heart. The next image shows the cell rounding up after receiving Cyclin A2 and the cell division takes place shortly ...