Depression and chemical imbalance

Brain scan resolutions
Brain scans at the Center for Magnetic Resonance Research in Minneapolis on Sept. 27, 2010.
MPR Photo/Jeffrey Thompson

The conventional wisdom about depression over the past 30 years has been that depression is caused by low levels of the chemical serotonin. But it's becoming increasingly clear to many researchers and mental health professionals that serotonin is only one factor in depression.

Dr. Joseph Coyle, professor of psychiatry at Harvard, and Dr. Daniel Carlat, an associate professor of clinical psychiatry at Tufts University School of Medicine and editor-in-chief of the Carlat Psychiatry Report, will join Kerri to talk about what we know and don't know about brain chemistry and depression. He is the author of the book "Unhinged."

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