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This article reviews developments in three major eating disorders — anorexia nervosa, bulimia nervosa, and binge-eating disorder.
Disordered eating behaviors affect up to 7% of American boys and 13% of girls between 9 and 14 years of age. The Diagnostic and Statistical Manual of Mental Disorders IV (DSM-IV) lists three broad categories of eating disorders: anorexia nervosa, bulimia nervosa, and eating disorder not otherwise specified. Anorexia nervosa is defined by extremely low body weight and an intense fear of gaining weight. Bulimia nervosa involves binge eating with purging behaviors. Regarding the challenges of diagnosis, more than 50% of cases are classified as atypical or eating disorder not otherwise spec…