This is a serious issue, but for a humorous sci fi take on this issue, go read The Lust Lizard of Melancholy Cove by Christopher Moore. It deals with a small t

This is a serious issue, but for a humorous sci fi take on this issue, go read The Lust Lizard of Melancholy Cove by Christopher Moore. It deals with a small town psychiatrist who takes a whole town off of anti-depressants, and an ancient monster is summoned from the depths attracted by all the heightened emotions and terrorizes the town.