Binge eating disorder (BED) is the most common eating disorder and was newly recognized in 2013 in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). BED is frequently associated with obesity and the metabolic syndrome, as well as with other psychiatric diseases, such as mood (49%), anxiety (41%), and substance use (22%) disorders. BED is highly prevalent and carries a high burden of mental and physical illness and disability. However, BED is frequently under-recognized and under-treated.