Do PFAS chemicals raise your cholesterol?

What's actually in it

PFAS (per- and polyfluoroalkyl substances) are chemicals used in nonstick cookware, stain-resistant coatings, waterproof clothing, food packaging, and firefighting foam. They're called "forever chemicals" because they don't break down.

They get into your body from food cooked in nonstick pans, water from PFAS-contaminated sources, and food that touched PFAS-coated packaging. Once in your blood, they stay there for years.

What the research says

A 2026 study in Environmental Science and Technology analyzed blood samples from a large population and found a clear pattern: the higher the PFAS concentration in blood, the higher the total cholesterol and LDL (bad) cholesterol.

This wasn't a small effect. The researchers found a consistent dose-response relationship, meaning more PFAS equals more cholesterol. People in the highest PFAS exposure group had cholesterol levels meaningfully higher than those with the lowest exposure.

PFAS appear to interfere with how your liver processes fats. They bind to the same receptors that regulate cholesterol production and transport, essentially hijacking your body's lipid system.

This matters because high LDL cholesterol is one of the biggest drivers of heart disease and stroke. PFAS from cookware and packaging may be quietly raising your cardiovascular risk every day.