While it’s normal for the challenges of daily life to cause occasional changes in your mood, sometimes there may be a more serious underlying cause. “It can be hard to tell what normal fluctuations in ...

You snap at your partner over something trivial, find yourself crying during a commercial, or feel an overwhelming sense of anxiety seemingly out of nowhere. While it’s easy to blame yourself for ...

Researchers from McGill University may have discovered the "holy grail" of bipolar disorder research: understanding what causes shifts between manic and depressed states. Sleep-wake rhythms in normal ...