Can PFAS in adolescents' blood relate to brain structure?
Yes, with caution. A 2026 HOME Study paper found age 12 PFAS blood levels were associated with MRI brain structure measures, but the authors said the meaning is uncertain.
What's actually in it
PFAS are persistent chemicals used for grease, water, and stain resistance in some products. They break down slowly, so they can build up in blood over time.
Kids and teens can be exposed through several routes, including drinking water, grease-resistant food packaging, some nonstick surfaces, and some stain-resistant textiles.
What the research says
A 2026 study in Environmental Research measured PFAS in 155 adolescents from the HOME Study and used MRI scans at age 12.
The study found that higher age 12 PFOA and PFNA levels were associated with larger total gray matter volume. Higher PFOA and PFOS levels were associated with lower total white matter volume and thicker cortex measures.
The authors said the meaning of these MRI differences is uncertain. They said the pattern is consistent with delayed brain maturation, but this study does not prove PFAS caused a brain problem.
A 2020 overview in Environmental Science: Processes & Impacts found PFAS have been used in many consumer categories, including textile impregnation.
What to do at home
Focus on repeat sources. Limit grease-resistant food packaging when you can, use stainless steel or cast iron instead of old nonstick pans, and skip stain-resistant finishes on kid textiles. When you need baby or kid basics, choose simple organic cotton items without stain-resistant claims.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Serum PFAS concentrations and neuromorphometry in adolescents: The HOME Study. | Environ Res | 2026 |
| An overview of the uses of per- and polyfluoroalkyl substances (PFAS). | Environ Sci Process Impacts | 2020 |