With each heartbeat, blood courses through your body. Some traverse arteries from the lungs back to the heart, and some navigate through capillaries in the thinnest layers of your eyelid, almost ...

A sudden restriction of blood flow to the brain. That's how scientists have traditionally explained why people faint. But several mysteries remain: What causes someone's blood flow to spontaneously ...

Researchers have developed brain-on-a-chip technology that uses human tissue to model how the brain’s protective barrier ...

Each year, about 185,000 people in the United States undergo amputation. Nearly half of those are due to injured blood vessels cutting off circulation to a limb. Surgeons can transplant an intact vein ...