Are prenatal PFAS levels linked to child growth issues?

What's actually in it

PFAS (per- and polyfluoroalkyl substances) are a group of man-made chemicals used to make products resistant to water, grease, and stains. Because they do not break down in the environment or the human body, they are often called forever chemicals.

These chemicals can cross the placenta during pregnancy. This means that a developing fetus is directly exposed to whatever levels of PFAS are in the mother's blood. Once inside, these substances can interfere with normal biological processes, including those that control how a child grows and develops.

What the research says

The link between these chemicals and child development is backed by recent peer-reviewed research. A 2026 study in J Hazard Mater found a clear association between prenatal PFAS exposure and catch-up growth patterns in children who were born with adverse health outcomes.

Other research confirms that these chemicals impact development beyond just physical size. A 2026 study in Environ Res looked at fetal growth measurements in utero and at birth, confirming that prenatal exposure to these substances alters normal growth trajectories. Furthermore, a 2026 study in Environ Res linked prenatal exposure to both long-chain and short-chain PFAS to issues with cognitive development in young children.

The risks are not limited to growth and brain development. A 2026 study in Environ Int connected prenatal PFAS exposure to an increased risk of childhood respiratory allergic diseases. Additionally, a 2026 study in Environ Int identified sex-specific links between endocrine-disrupting chemicals, including PFAS, and visual impairment in children by age 3.