Figure 1.

(a) Changes in school year versus summer prevalence of overweight and obesity from kindergarten to second grade in a nationally representative cohort of children (Source: von Hippel and Workman²⁹). (b) Changes in school year versus summer prevalence of overweight and obesity from first through fifth grades in a cohort of children attending one school district in Texas (Source: Chen et al³⁰). (c) Changes in school year versus summer BMI z-score by weight status (Source: Moreno et al²⁴).