Some veterans who have served in combat in places like Iraq and Afghanistan say using marijuana has helped reduce their PTSD-related symptoms.

(Photo: Courtesy of Ricardo Andre Pereyda)
Veterans who suffer from post-traumatic stress disorder (PTSD) say that using marijuana helps ease their symptoms, and for a long time, they've pushed to add it to the list of approved conditions for medical marijuana. Colorado lawmakers are currently considering a controversial bill that would do just that. 

One reason it's controversial is that there's little research into the effectiveness of marijuana for medical conditions, including PTSD.  But the Obama administration recently took a major step toward approving a study using marijuana to treat veterans with the condition.  We speak with Dr. Sue Sisley, a primary care physician and psychiatrist on the faculty at the University of Arizona, who would lead the study.