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 ...

Read full article: Yes, allergy season is getting longer – here’s why A doctor listens to a woman's lungs. Read full article: 5 reasons nonsmokers get diagnosed with lung cancer The control screen of ...

The simple, constant rhythm of a beating heart is a reassuring sign of life. With each lub-dub, blood brings life-sustaining oxygen throughout the body. But behind this steady beat is a busy ...

Johns Hopkins Medicine scientists who arranged for 48 human bioengineered heart tissue samples to spend 30 days at the International Space Station report evidence that the low gravity conditions in ...