Can prenatal PFAS exposure slow your child's brain development?

What's actually in it

PFAS show up in nonstick cookware, stain-resistant fabrics, microwave popcorn bags, and contaminated tap water. These chemicals build up in a pregnant woman's blood and cross the placenta to reach the baby's developing brain. Both long-chain PFAS (like PFOA and PFOS) and newer short-chain versions can make this journey.

What the research says

A 2026 study in Environ Res measured PFAS levels in pregnant women and then tested their children's thinking skills in early childhood. The researchers found that babies exposed to higher levels of both long-chain and emerging PFAS scored lower on cognitive development tests.

The effects showed up in areas like memory, problem-solving, and language development. Newer "short-chain" PFAS, often marketed as safer replacements, were also linked to lower scores. The study followed children from the Wuxi Birth Cohort in China.

To protect your baby's brain during pregnancy, replace nonstick pans with cast iron or stainless steel. Filter your drinking water and avoid microwave popcorn bags and grease-resistant food wrappers.