Bipolar disorder produces extreme mood swings that can be debilitating. Researchers think the nose's "smell" cells may lead to better care.

We follow Becky Bruno, a teenager suffering from social anxiety disorder, as she explains how she learned to start enjoying her life.

Watching tragic events on TV can stress you out and contribute to health problems. Know the signs.

Everyone worries now and then and that's healthy. But for some people, unrelenting worry interferes with their ability to enjoy life.

One patient describes her obsessive compulsive disorder as teenage anxiety multiplied by 100.