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+ By HEALTH AND BEAUTY APPS
Seasonal Affective Disorder or "SAD" is a common type of depression that affects some people during the change of seasons when there is less or no sunlight. This is a condition that's really not understood by doctors, but it's thought to be related to the amounts of melatonin and serotonin in your body. It's believed that a chemical imbalance occurs which is caused by a lack of sunlight. This is most common in the months of September through April. There are some things that can be helpful to individuals that suffer from this condition.