Obesity is major health problem in the United States. National data indicate that 65.1% of Americans are considered overweight or obese (body mass index [BMI] ≥25 kg/m2).1 The prevalence of obesity (BMI >30 kg/m2) has increased >50% (14.5-33.6%) over the past 2 decades.2, 3 The known risks of morbidity that are associated with overweight include hypertension, cardiovascular disease, diabetes mellitus, and cancer. Weight gain during adult life is also associated with increased risk of heart disease and death.4, 5 Even modest amounts of weight gain dramatically increase the risk for the development of diabetes mellitus after 18 years of age.