Eating Disorders, Co-Morbid Disorders and Early Risk Factors Amongst Post-9/11 Veteran Men and Women.

Objective: To assess, by interview, the rates of eating disorders in a nationally representative sample of recent veterans, describe their DSM-5 eating disorder diagnoses and the occurrence of comorbid psychiatric disorders. To conduct an exploratory case-control analysis of previously documented and additional specific military risk factors before eating disorder onset to inform studies of prospective risk.

Method: Using a two-stage design, probable cases and controls were identified by screening questionnaires from a sample of 1494 veterans who completed a survey study and interviewed to establish case status and confirm probable co-morbid psychiatric diagnoses. Previously documented risk factors and military risk factors occurring before disorder onset were investigated.

Results: Ninety-one cases and 51 controls were confirmed. Weighted prevalence for any eating disorder was 5.2%, with estimates for anorexia nervosa, bulimia nervosa, binge eating disorder and other specified eating disorder being 0.01%, 0.6%, 1.4%, and 1.6%, respectively. Seventy-nine (86.8%) confirmed cases had a diagnosis of one or more co-morbid psychiatric disorders. Previously documented risk factors were associated with subsequent case status, while in this sample, military risk factors were not.

Discussion: Rates of eating disorder and co-occurring psychiatric disorders in recent veterans were comparable to those reported for non-veterans, with levels of posttraumatic stress disorder likely higher. As co-occurring psychiatric disorders, particularly posttraumatic stress disorder, may complicate achieving good outcomes with existing evidence-based treatments, there is an urgent need to adapt them where necessary to improve outcomes. Military risk factors may maintain or exacerbate pre-existing problems and need to be investigated alongside other maintaining factors in longitudinal studies.

Public Significance: Rates of eating disorder and co-occurring psychiatric disorders in recent veterans were comparable to those reported for non-veterans, highlighting a need to detect eating problems and address unmet treatment need. Co-occurring psychiatric disorders may complicate achieving good outcomes with existing treatments, emphasising a need to adapt them to improve outcomes. Investigating maintaining factors, including military factors in longitudinal studies will likely aid treatment development.