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 ...

Vasovagal syncope is the most common type of fainting, a temporary loss of consciousness. It's a condition that happens when your blood pressure and heart rate suddenly drop, delivering less oxygen to ...

A lot of people faint at some point in their lives for no clear medical reason. New research provides some explanation. And now an update on the science of swooning. NPR's Jon Hamilton reports on ...