The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is ...

Scientists in the U.S. have created a tiny, innovative chip that mimics real human blood vessel structures to transform how medicine understands, diagnoses, and treats cardiovascular conditions ...

The human heart  a fist-sized muscular powerhouse  is one of the most enduring and vital organs in the body. Beating approximately 100,000 ...

Blood clots can form in both arteries and veins, but the causes, dangers, and prevention strategies are quite different ...

Diuretics - sometimes called "water pills" - increase the amount of water the body expels. They are taken widely, including ...

Blood vessels grown in the lab in just five days could quickly prevent the tissue damage that can occur after an accident ...

In TODAY.com's Expert Tip of the Day, a cardiologist explains why neglecting your "second heart" can lead to health ...

When blood is pumped to an organ in the body, it moves from a large artery ... Turning these designs into functioning blood vessels is just one of the many aspects of bioprinting a functioning human ...

As people across Ontario, Quebec and major cities in the U.S. swelter under a June heat wave, medical experts are urging them ...

Scientists from Cincinnati Children's and colleagues based in Japan report achieving a major step forward in organoid technology: producing liver tissue that grows its own internal blood vessels.