EATING DISORDER: the findings for the rates over the lifetime of people were similar to past studies. That is, the rates of AN, BN, and BED were 0.3%, 0.9%, and 1.6%, respectively. Regarding illness onset, the median ages for onset of AN, BN, and BED was about 12- to 13-years-old. Eating disorders among adolescents was often associated with functional impairment and suicidality. Most teenagers who had a diagnosis of AN, BN, and BED in the past 12 months reported significant impairment (97%, 78%, and 63%, respectively) (2011)