Actor Robin Williams appears onstage during MTV's Total Request Live at the MTV Times Square Studios on April 27, 2006 in New York City. (Photo by Peter Kramer/Getty Images)

From the way you move and sleep, to how you interact with people around you, depression changes just about everything. It is even noticeable in the way you speak and express yourself in writing. Sometimes this “language of depression” can have a powerful effect on others. Just consider the impact of the poetry and song lyrics of Sylvia Plath and Kurt Cobain, who both killed themselves after suffering from depression.

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