About 13 million Americans are estimated to be affected by Seasonal Affective Disorder. It's a form of depression typically seen in the fall and winter months.

The bold question-askers at What If consult experts on how to beat Seasonal Affective Disorder and the mental toll of winter.

Seasonal depression doesn't just happen in the winter. Learn why symptoms might show up in the spring, and discover tips that ...

What is reverse SAD? “Reverse seasonal affective disorder, or summer-pattern SAD, is a type of depression that occurs during the spring and summer months, as opposed to the more common winter-pattern ...

Seasonal affective disorder is real: Even Adele admits she's been hit by gloomy weather-induced depression. These lamps are your solution.