Seasonal affective disorder (SAD) is a form of depression. It affects people from fall through spring, peaking in January and February. The exact cause is not known, but it appears to be related to hormonal changes that occur with reduced sunlight. Depressive symptoms range from mild to severe. They include increased sleepiness, fatigue, loss of interest in activities, and weight gain.
The main treatment for SAD is light exposure. It is important to get outside during the daylight hours. Some people find using an artificial light box to be helpful. Antidepressants and counseling may be needed if this does not work.
There are not many natural therapies used to treat SAD symptoms. A well-balanced diet may be helpful. It should have a healthy mix of fish, dairy, eggs, fruit, and vegetables. These treatments are most effective when used with other treatments.
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Negative air ionization therapy
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Last reviewed February 2019 by EBSCO NAT Review Board
Richard Glickman-Simon, MD
Last Updated: 2/22/2019