Could explain why some soldiers are more susceptible
                                
                                
                                    (Newser) -
                                    A gene that may influence an individual's susceptibility to post-traumatic stress disorder has been identified by psychologists at Emory University, Time reports. A study of low-income African-American adults in the Atlanta area, 80% of whom had experienced trauma, found that certain versions of a gene were linked to higher PTSD...