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What is depression?

Depression is a mental health disorder, thought to be due to changes in neural circuit activity. Depression is characterized by persistent sadness or loss of interest in activities once enjoyed. The condition impairs daily life and requires a medical diagnosis. Situational depression (a form of depression that can occur in the aftermath of various traumatic changes in your life—such as when reacting to a death) may be a normal variant, unless it continues on for long periods.

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