Seasonal Affective Disorder (SAD) and Light Therapy.


Seasonal Affective Disorder (SAD) and Light Therapy

Seasonal Affective Disorder, sometimes called winter blues, is a biologically based disturbance of mood that affects up to 5 million people in the northeastern United States. Common symptoms include increased sleep, increased appetite, weight gain, depressed mood, and low energy. It does not seem to be connected to the cold, but rather to the intensity of the light in the winter sky at northern latitudes.

You can do a trial of light therapy for SAD at the Counseling Center.



Online Sources of Information

America’s National Institute for Mental Health (NIMH) has an excellent “fact sheet” on SAD:

Search “Seasonal Affective Disorder” (SAD) and/or “Light Therapy” at

Medline Plus has a resource page with lots of good information as well as other links:

Interview from the Americal Psychological Association: