Largest US Study Yet Links PFAS to Gestational Diabetes

One of the largest US pregnancy studies just confirmed: PFAS exposure during pregnancy is associated with gestational diabetes.

What the Study Found

A 2026 study in Diabetes Care used data from the ECHO (Environmental Influences on Child Health Outcomes) Cohort, a massive multi-site US study. Researchers measured PFAS levels in pregnant women and tracked who developed gestational diabetes mellitus (GDM).

The association was clear: higher PFAS levels meant higher GDM risk. This is one of the most powerful studies to date on this topic because of the large sample size and the rigor of the ECHO consortium.

Why This Study Matters

Smaller studies have linked PFAS to gestational diabetes before, but they were easy to dismiss. The ECHO cohort is different. It's large, multi-site, well-funded, and published in Diabetes Care, one of the top diabetes journals in the world. This is the kind of evidence that changes clinical guidelines.

GDM affects the health of both mother and baby. It increases the risk of preeclampsia, preterm birth, C-section, and type 2 diabetes for both parent and child later in life.

What You Can Do

Get your water tested for PFAS. Use a reverse osmosis filter. Ditch nonstick cookware. Avoid stain-resistant fabrics and food packaging. If you're pregnant, talk to your doctor about GDM screening.

Browse our non-toxic baby products for PFAS-free options.

Also see glass food storage for safer alternatives.

Source: Starling AP, Burjak M, Nzegwu AW, et al. (2026). Diabetes Care.