Overview

• In a four-week randomized trial of 72 men, those taking one gram of oat-derived beta-glucan before each meal saw an 8% reduction in PFOA and PFOS blood levels.
• Boston University researchers attribute the effect to the fiber’s ability to form a viscous gut gel that prevents PFAS absorption and boosts elimination via feces.
• The study, published in Environmental Health in March, used a rice-based placebo control and measured 17 PFAS compounds in participants’ blood before and after the intervention.
• Experts note that the trial’s four-week duration is short relative to PFAS half-lives of two to seven years and recommend longer and higher-dose fiber studies to assess lasting impacts.
• Global regulators are tightening PFAS standards for drinking water and consumer products, highlighting policy momentum alongside dietary mitigation strategies.