Does light therapy work for seasonal affective disorder?

Yes: Many studies have shown the benefit of light therapy for sad. Now there is even evidence that blue light is the most important wavelength.

Yes, but ...: While in recent years the blue light wavelengths were thought to be most effective, recent research shows that they may also speed the development of macular degeneration, a potentially eyesight-threatening disease. Do your research and ask your doctor.

SAD Therapy: Treatment for seasonal affective disorder may include light therapy, medications and psychotherapy. If you have bipolar disorder, your doctor will be careful when prescribing light therapy or an antidepressant. Both treatments can potentially trigger a manic episode.

Seasonal affect: For some, a melatonin lamp can be very effective. These can be found cheaply on Amazon.com.