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Medical expert weighs in on Robin Williams' struggle with depression, substance abuse

Name: Medical expert weighs in on Robin Williams' struggle with depression, substance abuse
Uploaded: 2014-08-12T08:50:00-0400
Duration: 3 min 41 s
Description: Columbia University's psychiatry chairman Dr. Jeffrey Lieberman joins the "CBS This Morning" co-hosts to discuss effects of the comedic legend's battles with depression, drugs and alcohol.

Columbia University's psychiatry chairman Dr. Jeffrey Lieberman joins the "CBS This Morning" co-hosts to discuss effects of the comedic legend's battles with depression, drugs and alcohol.