“…Worldwide, mental disorders accounted for nearly 11% of the disease burden in 1990 and are projected to affect 15% of the world population by 2020, causing a public health impact nearly as large as cardiovascular and respiratory diseases [66,67]. Thirteen percent of all military hospitalizations from 1990 to 1999 were reported as mental health disorders [68], and as many as 17% of serving members had symptoms of anxiety and 19% had symptoms of depression in 2001 [69]. Among Cohort members, meaningful levels of a number of common, potentially serious mental disorders were identified and found to be consistent with prevalence in other populations, such as major depressive disorder (3%), panic syndrome (1%), other anxiety syndrome (2%), eating disorders (2%), and PTSD (2%).…”