Fiber may help reduce “Forever Chemicals” in human body, study finds

A new peer-reviewed study suggests that increasing dietary fiber intake may reduce levels of toxic PFAS, or “forever chemicals,” in the human body, according to an article published by The Guardian. The research found that fiber was especially effective at lowering blood concentrations of PFOS and PFOA—two long-chain PFAS linked to serious health issues including cancer, kidney disease, and birth defects.

Researchers say fiber forms a gel in the gut that prevents PFAS absorption, similar to how it eliminates bile acids. While promising results have been observed in mice and a small group of humans, larger trials are underway.

Lead author Jennifer Schlezinger of Boston University said the approach is affordable and practical, especially when fiber is consumed with meals.

Unlike the cholesterol drug cholestyramine, which causes hard stools, fiber offers additional digestive benefits. PFAS are used in many household products and are found in nearly everyone’s blood due to their persistence in the environment.