Over one million Americans faint every year, and countless more do worldwide. Fear, pain, the sight of blood or prolonged standing – think the long lines of summer travel – can trigger fainting. These ...

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 ...

We have an update now on the science of swooning. I often swoon when I hear our theme music by B.J. Leiderman. NPR's Jon Hamilton reports on evidence that fainting can be caused by a newly discovered ...

Fainting (known medically as syncope) is a sudden loss of consciousness and collapse due to temporary lack of blood flow to the brain. Fainting is always an emergency, but the most common conditions ...

Fainting, also known as syncope, occurs when blood flow to the brain temporarily decreases — leading to a brief loss of consciousness. While it can result from dehydration, overheating, or medical ...