Dr. Kate Chard is in charge of the study and says she and her team are working to find where PTSD biomarkers live in DNA. The Cincinnati VA Medical Center is enrolling veterans in the study in Cincinnati. If things go how Dr. Chard hopes, the study could revolutionize the diagnosis and treatment of a disorder that, at any given time, makes it much harder to go about daily life for around 8 percent of the general population. For those who have served in the military, that number is anywhere from 11 to 30 percent. Dr. Chard and her team of researchers are looking for proteins and neurochemical reactions underlying PTSD to not only identify who has it, but how likely it is to manifest itself in different forms.