Comprehensive strategies to address childhood obesity are needed. Despite recent stabilization of prevalence among 2- to 11-year-old children, nearly one-third of US children and adolescents are overweight (body mass index [BMI] 85th-95th percentile for age and sex on US Centers for Disease Control and Prevention growth charts) or have obesity (BMI ≥95th percentile).1 Substantial disparities exist by race/ethnicity: more than 20% of Hispanic boys and girls and non-Hispanic black girls have obesity compared with 14% to 15% of non-Hispanic white girls and boys. The prevalence of extreme obesity (BMI ≥120% of the 95th percentile) is rising and is nearly 6% among all children and adolescents and 9% among black girls.