.5Quiz Ref ID Diseases commonly associated with the metabolic syndrome, such as obstructive sleep apnea, hypertension, dyslipidemia, polycystic ovary syndrome, and nonalcoholic steatohepatitis, were previously almost unknown in adolescence but are now commonplace,3- 6 as are serious psychosocial disabilities.6,7 Life expectancy for obese adolescents is reduced.7,8