PFAS Replacements Aren't Any Safer for Pregnant Women
NonToxCo Research
Science & Safety Team · 4/6/2026
Companies quietly swapped out old PFAS chemicals for newer ones and called their products "PFAS-free." A new study says the replacements are just as risky for pregnant women.
The "Regrettable Substitution" Problem
A 2026 study in Chem Biol Interact compared legacy PFAS compounds (PFOA and PFOS) with their newer alternatives (HFPO-DA and OBS) using network toxicology analysis. The question was simple: are the replacements actually safer for pregnant women?
The answer: no. The study found that PFAS alternatives pose comparable or even novel risks for hypertensive disorders of pregnancy (HDP). That includes preeclampsia, gestational hypertension, and related conditions that can be life-threatening.
Same Risks, Different Names
Legacy PFAS like PFOA and PFOS have been phased out of many products because of documented health harms. But the replacements share similar chemical structures and, according to this study, similar biological effects. Some of the alternatives triggered unique toxicological pathways not seen with the older compounds, meaning they could cause problems we haven't even identified yet.
The study systematically evaluated how these chemicals interact with biological targets involved in blood pressure regulation and placental development. Both old and new PFAS hit the same targets.
What You Can Do
Don't trust "PFAS-free" labels at face value. The replacement chemicals may not be safer. Instead, avoid the product categories where PFAS hide: nonstick cookware, stain-resistant fabrics, waterproof coatings, and greaseproof food packaging. Choose naturally PFAS-free materials like stainless steel, cast iron, and untreated cotton. Start with our non-toxic baby products.
Also see glass food storage for safer alternatives.