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3 answers

Chemical imbalance in the brain.

2006-08-22 02:17:57 · answer #1 · answered by Jake 1 · 0 0

drugs or a gene past through the family

2006-08-25 17:25:03 · answer #2 · answered by robs_princess2 3 · 0 0

genetic and environmental

2006-08-22 09:00:31 · answer #3 · answered by firstyearbabyboomer 4 · 1 0

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