SAD Light therapy

Seasonal Affective Disorder is a depression that afflicts people primarily during the winter months, and is often referred to as seasonal depression.Researchers agree that the lack of sunlight in the fall and winter causes the effects of seasonal depression. Without sunlight, the brain doesn't produce enough serotonin, which results in the symptoms of depression.

Light therapy produces serotonin in the brain, and researchers believe low serotonin levels contribute to depression. Since this discovery, scientists have successfully used bright light to treat non-seasonal depression as well as other mood disorders with light therapy.