Eating disorders are a complex set of illnesses most commonly affecting white adolescent girls and young women. The most common eating disorders seen in the primary care setting are anorexia nervosa, bulimia nervosa, and binge eating disorder. Treatment in the primary care environment ideally involves a physician, therapist, and nutritionist, although complex cases may require psychiatric and other specialist care. Early diagnosis and treatment are associated with improved outcomes, whereas the consequences of untreated eating disorders, particularly anorexia nervosa, can be devastating, including death.