How do PFAS from nonstick cookware affect proteins in the body?
PFAS bind to proteins throughout the body and alter their structure and function.
What's actually in it
PFAS (per- and polyfluoroalkyl substances) from nonstick cookware, food packaging, and stain-resistant products accumulate in blood. There, they don't just float around. They bind to proteins. Blood proteins like albumin and transport proteins carry PFAS around the body. Enzyme proteins that control metabolism get altered when PFAS stick to them.
The C-F (carbon-fluorine) bond in PFAS is one of the strongest chemical bonds in nature. It lets PFAS bind tightly to proteins and stay there.
What the research says
A 2026 review in Int J Mol Sci compiled the evidence on PFAS interactions with proteins. Researchers found that PFAS alter protein structure and function across multiple biological systems including immune proteins, thyroid hormone carrier proteins, and metabolic enzymes. The changes affect how those proteins do their jobs, which explains why PFAS exposure is linked to so many different organ systems.
The liver can't break down PFAS. They stay in the body for years, continuing to bind to proteins throughout that time.
Every reduction in PFAS exposure matters because the body clears them so slowly. Start with cookware: stainless steel cookware has no PFAS coating and prevents ongoing exposure from one of the main household PFAS sources.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| The Impact of Forever Chemicals on Protein Structure and Function | Int J Mol Sci | 2026 |
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