Can PFOA from nonstick products cause repeated miscarriages?

What's actually in it

Perfluorooctanoic acid (PFOA) is a PFAS chemical that was widely used in nonstick cookware coatings, waterproof fabrics, and food packaging for decades. Although it's been phased out of new products in many countries, PFOA is still found in older cookware, imported goods, and contaminated drinking water. Because it doesn't break down, people still carry it in their blood.

PFOA crosses the placenta and has been detected in umbilical cord blood and amniotic fluid.

What the research says

A 2026 study in Environ Sci Technol uncovered a specific mechanism by which PFOA causes spontaneous miscarriage. The chemical disrupts macrophages, immune cells that play a critical role in maintaining a healthy pregnancy.

Normally, macrophages in the uterus help the embryo implant and protect it from the mother's immune system. PFOA caused these macrophages to retain ammonia, a toxic waste product that's usually cleared quickly. The buildup of ammonia poisoned the surrounding uterine tissue and created a hostile environment for the embryo.

The researchers found this effect at PFOA levels similar to those measured in the general population, not just in heavily contaminated communities. Women with higher PFOA blood levels had a stronger macrophage malfunction and higher rates of pregnancy loss.

If you're planning a pregnancy, get rid of old nonstick pans and avoid PFAS-coated food packaging. A home water filter rated for PFAS removal can also lower your daily exposure. These steps won't eliminate PFOA already in your blood, but they'll stop adding to it.