About 10 million Americans suffer from Seasonal Affective Disorder. They often become depressed, experience mood changes or don’t have a lot of energy when the days get shorter in the late fall and winter.

Less exposure to light is what causes SAD.

Light therapy is one of the ways SAD is treated.

Tuesday’s Smart Talk shines a light on SAD with Dr. Melissa Brown,  PsyD., Clinical Psychologist, UPMC PinnacleHealth Psychological Associates.