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Are Parkinson’s and depression linked? Dr. Nancy Snyderman weighs in

Dr. Nancy Snyderman, NBC News’ chief medical editor, joins TODAY to discuss the revelation that Robin Williams had Parkinson’s disease, saying that in some cases, people with Parkinson’s have a slightly increased risk for depression.

Dr. Nancy Snyderman, NBC News’ chief medical editor, joins TODAY to discuss the revelation that Robin Williams had Parkinson’s disease, saying that in some cases, people with Parkinson’s have a slightly increased risk for depression.