Do you know someone who begins to feel down at the end of summer? Do you know someone who struggles to get out bed during winter? Who maybe doesn't have as much energy as they did when the days were longer?

Seasonal Affective Disorder (SAD) affects up to 5% of the U.S. population for an average of almost five months each year, which means it’s considered a major mental health disorder that affects daily quality of life.

In this episode Dr. Mark explains what SAD is, its symptoms, and some ways it can be treated.