Can PFAS exposure during pregnancy damage your child's kidneys?

What's actually in it

PFAS from nonstick cookware, stain-resistant coatings, food packaging, and contaminated water cross the placenta during pregnancy. The fetal kidneys develop throughout the second and third trimesters, making this a critical window of vulnerability.

The kidneys do more than filter blood. They regulate blood pressure, electrolyte balance, and hormone production. Problems during kidney development can have lifelong consequences.

What the research says

A 2026 review in Environmental Pollution synthesized research on how PFAS disrupt fetal kidney development. The mechanisms are direct: PFAS activate certain receptors in kidney cells that control development, alter gene expression in the growing kidney, and trigger oxidative stress that damages developing nephrons (the functional units of the kidney).

Children born to mothers with higher PFAS levels had smaller kidneys at birth and showed reduced kidney function markers in childhood. Some of these children showed early signs of kidney stress that typically precede kidney disease.

Once the kidneys form, their structure is largely set. Fewer functional nephrons at birth means less reserve capacity throughout life, a lower threshold before kidney disease develops with age or illness.