Is prenatal PFAS tied to changes in baby metabolism markers?

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. They are often called forever chemicals because they don't break down in the environment or your body. When you are pregnant, these chemicals can cross the placenta and reach your baby.

These substances are found in everything from nonstick pans and food packaging to stain-resistant fabrics. Because they are so common, most people have some level of PFAS in their blood. Research shows that these chemicals can disrupt normal biological processes during critical windows of fetal development.

What the research says

A 2026 study in Environ Res looked at how prenatal PFAS exposure affects fetal growth. The researchers found clear associations between these chemicals and changes in how a baby grows both in the womb and at birth.

Other peer-reviewed research highlights the broader risks of these substances during pregnancy. A 2026 study in Environ Res linked gestational PFAS exposure to an increased risk of preeclampsia, a serious condition that affects both mother and baby. Furthermore, a 2026 study in Environ Res found that prenatal exposure affects pubertal development and endocrine hormones later in life.

These findings show that PFAS are not just sitting in the body. They are actively interfering with the hormones and growth markers that your baby needs to develop properly.