Millions of people live with atrial fibrillation, a racing, uneven heartbeat that can leave you exhausted and scared. Yet it ...

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 ...

Diabetes has long been treated as a disease of blood sugar, but a growing body of research suggests it is also a disease of anatomy, metabolism and even circuitry inside the heart. Instead of simply ...