PFAS in Children: What Does a School Meal Study Show?

What did the study find about school meals and PFAS?

Researchers led by George Mason University examined dietary and social factors in children enrolled in the Vidas Activas Familias Saludables study. Parents completed questionnaires, and researchers measured PFAS in children's blood. Participation in free or reduced-price school lunches was associated with lower concentrations of several chemicals, including PFOA and PFHxS. Associations differed across foods and chemicals: greater cheese consumption was linked to higher PFHpA, while fish consumption was associated with a greater likelihood of detecting PFBS. [Published study](https://www.nature.com/articles/s41370-026-00975-3).

The university's October 13 announcement reported blood testing in 106 children, most of whom had obesity and were participating in a family lifestyle program. Researchers suggested that school meals might reduce reliance on individually packaged foods, but they did not directly test that explanation. The results therefore support investigating meal sourcing and packaging; they do not establish that school meals themselves prevent PFAS exposure. [George Mason University research announcement](https://www.eurekalert.org/news-releases/1147612).

Why do PFAS levels matter for children's health?

PFAS, short for per- and polyfluoroalkyl substances, are manufactured chemicals that can reach people through contaminated food, drinking water, and dust. Some remain in the body for years. Young children may encounter additional exposure through hand-to-mouth behavior, including swallowing dust from contaminated surfaces or objects. These multiple pathways help explain why a food questionnaire cannot provide a complete account of exposure. [ATSDR exposure overview](https://www.atsdr.cdc.gov/pfas/prevent-exposure/your-body.html).

The Agency for Toxic Substances and Disease Registry describes associations between exposure to specific PFAS and higher cholesterol, changes in liver enzymes, and lower antibody responses to some vaccines. Evidence varies by chemical and outcome; PFAS should not be treated as a single substance with identical effects. The Virginia study did not evaluate whether participating children developed illnesses. Its exposure findings cannot establish that school meal participation improves immunity or prevents disease. [ATSDR health effects guidance](https://www.atsdr.cdc.gov/pfas/about/health-effects.html), [university study summary](https://www.eurekalert.org/news-releases/1147612).

How should families interpret the findings and reduce exposure?

This was an observational snapshot from one community, so the findings may not apply to other populations. Household resources and unmeasured exposures could help explain the associations. Establishing whether school meals reduce PFAS would require research following children over time and directly assessing potential sources. An association involving a food category also cannot identify the ingredient, packaging, or environmental source responsible. These are reasons to investigate the food supply, rather than treat a cultural dietary pattern as inherently hazardous. [George Mason University research announcement](https://www.eurekalert.org/news-releases/1147612).

ATSDR recommends using local health advisories to identify foods known to be contaminated and consulting environmental or public health agencies about private well testing when appropriate. Handwashing can also reduce ingestion of contaminated dust. For families concerned about a documented exposure, a clinician can discuss whether blood testing would provide useful information. Testing measures selected chemicals but cannot identify their source or predict future illness, and there is no approved medical treatment to remove PFAS from the body. [ATSDR clinician guidance](https://atsdr.cdc.gov/pfas/hcp/faqs/index.html).