Seasonal Affective Disorder Causes
Learn what the medical community has uncovered about what causes Seasonal Affective Disorder inside the condition center at ThirdAge.com. When you're done continue your research by selecting the next category in the left navigation.
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Causes of Seasonal Affective Disorder
The cause of SAD is not completely understood. It is clearly related to changes in seasonal light. Light affects cycles in the body. Lack of light during the winter months could possibly throw off levels of hormones and brain chemicals. This could contribute to the symptoms of SAD.
Scientists are also researching if SAD is related to lack of the chemical serotonin in the brain.
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