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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Michigan State University scientists have built tiny beating heart organoids that can be driven into atrial fibrillation with ...

Though an estimated 60 million people around the world have atrial fibrillation, or A-fib, a type of irregular and often fast heartbeat, it's been at least 30 years since any new treatments have been ...

Though an estimated 60 million people around the world have atrial fibrillation, or A-fib, a type of irregular and often fast heartbeat, it's been at least 30 years since any new treatments have been ...

Get pumped up — it's time to show off your knowledge about the heart. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Your heart pumps blood from ...

Human heart development is largely influenced by neural crest cells, which carefully regulate a key growth signal.

Credit: Getty Images A discussion of the history and future of artificial heart technology with Dr Francisco Arabia and Dr Jack Renfrew’s experience with an artificial heart transplant. In May 2025, ...