The reduction in light during the wintertime appears to cause SAD in susceptible people by disturbing the body's natural clock. In fact, people with SAD have a feeling of continual jet lag. Researchers believe this works by boosting the body's level of serotonin, a hormone that is associated with wakefulness and mood. Antidepressent medications can also help, and some people feel that moving to a latitude with longer days and less cloud cover has helped. Exercise, psychotherapy and phototherapy also are beneficial.
Lamps emitting light close to the natural frequency of the sun are available.
They should be used everyday for 30-60 minutes. By treating SAD symptoms early in the winter season, you may be able to keep depression from becoming severe. But treatment usually needs to be continued to prevent a relapse. If your symptoms are severe or persistent, seek help from your doctor or another health professional. The Health Alliance is now offering a free reminder for mammograms and pap smears.