Depression

Causes and Risk Factors

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1. Depression is a disorder of




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Depression is a disorder of the brain. Imaging technologies show that the brains of people with depression look different or are working differently than those who do not have the illness. The areas of the brain that control moods, thinking, sleep, appetite, and behavior appear not to be functioning well, and there may be very low or very high levels of important brain chemicals. But these images do not reveal WHY the depression has occurred.