Media Advisory: Graduates of comprehensive preschool program less likely to be obese in adulthood, NIH-funded study finds

Preschool age child playing with blocks at a desk.
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Children in high-poverty neighborhoods who participated in a comprehensive preschool program that provided parents with health and educational services and job training had a lower body mass index (BMI) in their late 30s than a similar group who participated in the usual early childhood programs, according to a study funded by the National Institutes of Health. The study authors concluded that comprehensive, school-based early childhood programs could lead to improvements in body mass index later in life. The study was conducted by Arthur J. Reynolds, Ph.D., of the University of Minnesota, and colleagues. It appears in JAMA Pediatrics.

Funding was provided by NIH’s Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD).

Of the study participants, nearly 700 had attended the Child-Parent Center preschool program, which enrolled children in high-poverty, majority Black neighborhoods in Chicago. Offering small classes and intensive instruction in school readiness skills, the program also provides parents with job and parenting skills training, educational classes, and social services. The children were provided with healthy meals and learned how to make healthy food choices. Compared to a similar group of more than 350 people who had not attended the program, participants showed a 3.2% reduction in BMI at 37 years of age. Women participants had a 7.5% reduction in BMI. Women also were 27% less likely to be obese compared to women who had not attended the program. The researchers found no significant differences in obesity rates among men who took part in the study, as the men in both groups had a low obesity rate.

Previous studies of the program’s graduates have found that, as adults, they have higher rates of educational attainment and household income than adults of the same background who did not partake in the program.


James A. Griffin, Ph.D., chief of the NICHD Child Development and Behavior Branch, is available for comment.


Reynolds, AJ, et al. A comprehensive, multisystemic early childhood program and obesity at age 37 years. JAMA Pediatrics. 2021.


About the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD): NICHD leads research and training to understand human development, improve reproductive health, enhance the lives of children and adolescents, and optimize abilities for all. For more information, visit

About the National Institutes of Health (NIH): NIH, the nation's medical research agency, includes 27 Institutes and Centers and is a component of the U.S. Department of Health and Human Services. NIH is the primary federal agency conducting and supporting basic, clinical, and translational medical research, and is investigating the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit

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