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What are we learning about how to treat PTSD?

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While the majority of men and women who were deployed to Afghanistan and Iraq returned to their lives feeling physically and emotionally fit, as many as 20 percent of all veterans who served in those war zones experience some symptoms of post-traumatic stress disorder.

Why do some people experience PTSD, but not others? And what are we learning about how to treat it? 

MPR News host Kerri Miller spoke with Brian Engdahl, a neuroscience professor at the University of Minnesota, and the Anderson Chair in PTSD Research at the University of Minnesota Medical School.