Some Soldiers May Be More Prone to PTSD

Studies of posttraumatic stress disorder (PTSD) by psychology researchers, including clinical psychology professor Michael Telch, have found that some soldiers deployed to war zones seem to be more vulnerable to development of the disorder. Dr. Telch and colleagues Anushka Pai, David Rosenfield, and Han-Joo Lee, found that soldiers' predeployment reactivity to carbon dioxide-enriched oxygen predicted significantly greater emotional response to war-zone stressors and increased the likelihood of posttraumatic stress disorder.

Link to article, “Emotional Reactivity to a Single Inhalation of 35% Carbon Dioxide and Its Association With Later Symptoms of Posttraumatic Stress Disorder and Anxiety in Soldiers Deployed to Iraq”

See also, research in the Laboratory for the Study of Anxiety Disorders