For most teenagers, just surviving puberty and keeping up with studies, after-school activities and a social life is enough of a challenge. Audrey Koch, 14, has much bigger concerns. She’s had more ...

Your heart beats about 100,000 times a day. Sometimes it beats faster and sometimes more slowly, depending on what you're doing and whether, for instance, you're all worked up about something. So ...

WARMINSTER, Pennsylvania (WPVI) -- You've probably never heard of PVCs, but chances are you've had them if you felt your heart skip a beat. Cardiac PVCs might be benign, but can sometimes pose a ...

Nataly Paramó was preparing to celebrate her 15th birthday in October when she experienced unexpected and alarming fatigue during basketball tryouts. The teen from East Chicago, Indiana, had always ...

Tom Brownlee does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...