Many medical experts believe that SAD is related to the body’s production of melatonin, a sleep-related hormone also associated with depression that is secreted by the pineal gland. Melatonin is produced at higher levels during periods of darkness. The short days and indoor lifestyle associated with the winter months limit exposure to sunlight, disrupting the body’s natural circadian rhythms—the natural cycles by which the body produces hormones, chemicals and neurotransmitters. As a result, melatonin production can fluctuate, which may increase susceptibility to depression.³ Some people who work in buildings without windows (where there is little or no access to natural sunlight) may also experience SAD-type symptoms at any time of the year.¹

Additional Information about Seasonal Affective Disorder

1. Seasonal Affective Disorder Overview
2. Common symptoms of seasonal affective disorder
3. Help me choose a natural and alternative treatment for seasonal affective disorder
4. Dietary and lifestyle recommendations that may help in the treatment of seasonal affective disorder
5. Conventional or prescription medications used in the treatment of seasonal affective disorder
6. Cited Sources and Additional Reading for seasonal affective disorder

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Article ID: 234