Ecstasy pills confiscated by law enforcement. For decades, MDMA has gotten a reputation as a dangerous club drug — but reporter Kelley McMillan says it was first used for therapeutic purposes in the '70s. Fernando Camino/Cover/Getty Images hide caption

itoggle caption Fernando Camino/Cover/Getty Images

Raymond Smith of Charleston, S.C., kneels in prayer in front of the Emanuel AME Church in Charleston before a worship service on June 21. Stephen B. Morton/AP hide caption

itoggle caption Stephen B. Morton/AP

Scott Skiles, 61, and his son Zach Skiles, 32, had never sat down to talk about Zach's life after his deployment to Iraq --until their recent StoryCorps interview. StoryCorps hide caption

itoggle caption StoryCorps

As an Army chaplain in Iraq, David Peters administered last rites and grieved with survivors. When he came home, he says, he "fell apart emotionally and spiritually." Courtesy of Robert K. Chambers hide caption

itoggle caption Courtesy of Robert K. Chambers

For veterans like Tim Maynard, scuba diving provides relief from symptoms of PTSD. Maynard goes diving once a week, exploring the Florida Keys and shipwrecks off the coast of North Carolina. Courtesy of Tim Maynard hide caption

itoggle caption Courtesy of Tim Maynard

Lourdes Garcia-Navarro with her husband, James Hider, and their dogs Nena (left) and Ursa. Tara Todras-Whitehill/Lourdes Garcia-Navarro hide caption

itoggle caption Tara Todras-Whitehill/Lourdes Garcia-Navarro

There's data to support the notion that pot, or a drug based on its active ingredient, could help ease the fears of PTSD. Ted S. Warren/AP hide caption

itoggle caption Ted S. Warren/AP

Anne Jones, 62, and Robin Jones, 73, at their home in Menlo Park, Calif. He took a test that revealed proteins typical of Alzheimer's disease. Ramin Rahimian for NPR hide caption

itoggle caption Ramin Rahimian for NPR

Insomnia, feeling isolated, and bursts of anger are symptoms of the anxiety disorder known as PTSD. hide caption

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Some patients with PTSD suffer recurring nightmares of a single event. / hide caption

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