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For the study, researchers compared a group of veterans with PTSD who had a service dog to a group of veterans on the waitlist to receive one.
“Our previous research suggests that the presence of a service dog reduced clinical PTSD symptoms and improved quality of life,” said study co-leader Maggie O’Haire. She is an assistant professor of human-animal interaction at Purdue University’s College of Veterinary Medicine, in West Lafayette, Ind.
“In this study, we wanted to determine if those beneficial effects also included changes in the physiology of stress,” O’Haire said in a university news release.