Depression: An Evolutionary Byproduct of Immune System? Emory University Study
3/2/2012 7:32:49 AM
Depression is common enough -- afflicting one in ten adults in the United States -- that it seems the possibility of depression must be "hard-wired" into our brains. This has led biologists to propose several theories to account for how depression, or behaviors linked to it, can somehow offer an evolutionary advantage.
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