Causal and maintenance factors in binge eating disorder

This commentary will address the causal and maintenance factors of binge eating disorder (BED). As with most psychological disorders, genetic and environmental influences interact in the development and maintenance of BED, but it remains unclear how much each factor contributes. The diathesis-stress model is briefly discussed as a useful framework for conceptualizing the etiology of BED. Evidence for heritability, hormonal dysregulation, and differential brain activation will be presented in support of a biological predisposition. Individual differences in affect regulation and response to external stressors are then discussed as environmental triggers. Finally, the relationship between dietary restraint and negative affect, and its potential contribution to the maintenance of BED is discussed.