---
topic: "Non-Stick Cookware"
title: "Teflon, PFAS, and the Risks of Non-Stick Coatings"
order: 1
description: "How PTFE coatings work, what happens when they overheat, and the PFAS chemicals tied to their production"
question: "Is Teflon non-stick cookware safe to use?"
answer: "Non-stick pans are likely safe at normal heat, but overheating above 260°C can release harmful fumes, and PFAS migration into food is not routinely tested."
actions:
  - "Never preheat an empty non-stick pan on high heat; it can reach damaging temperatures in 2–5 minutes."
  - "Cook on low to medium heat; PTFE is considered stable below about 260°C (500°F)."
  - "Replace pans with scratched or damaged coatings; scratches change how PTFE breaks down when heated."
cautions:
  - "Keep pet birds away from kitchens where non-stick pans are heated; fumes can be lethal to birds at levels that cause mild human symptoms [2]."
  - "Fumes from overheated PTFE can cause polymer fume fever: chills, fever, chest tightness and cough, usually resolving in 24–48 hours [2]."
  - "PFAS from cookware add to your cumulative exposure alongside drinking water and food packaging [1]."
confidence: 3
confidenceNote: "Polymer fume fever from overheating is a documented syndrome (a 1993 review); no cited study measures PFAS release from cookware."
evidenceSummary:
  rctCount: 0
  observationalCount: 0
  metaAnalysisCount: 0
  newestStudyYear: 2024
level: 2
references:
  - id: "1"
    pmid: "28224793"
    title: "A Never-Ending Story of Per- and Polyfluoroalkyl Substances (PFASs)?"
    authors: "Wang Z, DeWitt JC, Higgins CP, Cousins IT"
    year: 2017
    journal: "Environmental Science & Technology"
  - id: "2"
    pmid: "8272977"
    title: "Polymer Fume Fever and Other Fluorocarbon Pyrolysis-Related Syndromes"
    authors: "Shusterman DJ"
    year: 1993
    journal: "Occupational Medicine"
  - id: "3"
    title: "Release of Per- and Polyfluoroalkyl Substances (PFASs) from Non-Stick Food Contact Materials"
    authors: "Tokranov AK, Nishizawa N, Amadei CA, Zenobio JE, Pickard HM, Allen JG, Vecitis CD, Sunderland EM"
    year: 2020
    journal: "Science of the Total Environment"
  - id: "4"
    url: "https://www.epa.gov/assessing-and-managing-chemicals-under-tsca/risk-management-and-polyfluoroalkyl-substances-pfas"
    title: "Risk Management for Per- and Polyfluoroalkyl Substances (PFAS) under TSCA"
    authors: "U.S. Environmental Protection Agency"
    year: 2024
    journal: "EPA"
---

Non-stick cookware -- most commonly coated with PTFE, sold under the brand name Teflon -- has been a kitchen staple since the 1960s. While the coating itself is chemically inert at normal cooking temperatures, the manufacturing process historically relied on PFOA, a persistent "forever chemical" now linked to serious health effects [1]. Overheating non-stick pans above 260°C (500°F) can release toxic fumes that cause polymer fume fever [2]. For more on PFAS health effects, see our PFAS page.

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## What Is PTFE?

PTFE (polytetrafluoroethylene) is a synthetic fluoropolymer -- a long chain of carbon atoms with fluorine atoms bonded to every available site. This creates an extremely low-friction, chemically inert surface that food cannot easily adhere to [1]. At normal cooking temperatures (below about 260°C / 500°F), PTFE is considered stable and does not significantly decompose or leach into food.

The concern with PTFE cookware is not primarily the coating itself but the chemicals used to manufacture it and what happens when pans are misused.

## PFOA: The Manufacturing Problem

For decades, PFOA (perfluorooctanoic acid, also called C8) was used as a processing aid in manufacturing PTFE coatings. PFOA is a long-chain PFAS compound that persists indefinitely in the environment and bioaccumulates in humans with a half-life of roughly 3-4 years in the body [1]. Under a 2006 EPA stewardship program, the eight major fluoropolymer manufacturers agreed to phase out PFOA by 2015 [4].

However, PFOA was largely replaced by GenX (hexafluoropropylene oxide dimer acid) and other short-chain PFAS compounds. While these replacements are cleared from the body more quickly, emerging research suggests they may still pose health risks, including liver toxicity and developmental effects [4]. The EPA has since established health advisories for GenX in drinking water.

Finished non-stick cookware made after the PFOA phaseout should contain little to no residual PFOA.

## Overheating: Polymer Fume Fever

When PTFE is heated above approximately 300°C (570°F), it begins to decompose and release a mix of toxic fluorinated gases including hydrogen fluoride, carbonyl fluoride, and ultrafine PTFE particulates [2]. Inhaling these fumes can cause polymer fume fever -- a flu-like illness with symptoms including chills, fever, chest tightness, and coughing that typically resolves within 24-48 hours [2].

Empty non-stick pans left on a burner can reach these temperatures in just 2-5 minutes. Pet birds are especially vulnerable -- the fumes can be lethal to birds even at concentrations that produce only mild symptoms in humans [2].

## PFAS Leaching from Cookware

The total PFAS contribution from cookware is typically modest compared to drinking water or food packaging exposures, but it adds to the cumulative burden in an environment where PFAS are already ubiquitous [1].

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## The Chemistry of Decomposition

PTFE thermal decomposition follows a well-characterized pathway. Below 260°C, PTFE is remarkably stable. Between 300-400°C, chain scission begins, producing low-molecular-weight fluorinated compounds including tetrafluoroethylene (TFE), hexafluoropropylene (HFP), and perfluoroisobutylene (PFIB) -- the last of which is acutely toxic at very low concentrations [2]. Above 450°C, decomposition accelerates and produces hydrogen fluoride (HF), a corrosive gas that can cause pulmonary edema.

The kinetics of PTFE decomposition are influenced by the presence of metal substrates, surface scratches, and co-decomposition with food residues.

## Regulatory Landscape

The EPA's 2006 PFOA Stewardship Program successfully eliminated PFOA from new U.S. production, but the transition to GenX and other alternatives has drawn scrutiny [4]. In 2024, the EPA finalized the first national drinking water standard for PFAS, setting maximum contaminant levels of 4 ppt for both PFOA and PFOS individually. GenX received an MCL of 10 ppt as part of a PFAS mixture standard.

From a cookware safety perspective, no federal regulations currently mandate testing of non-stick coatings for PFAS migration into food under realistic cooking conditions. The FDA considers PTFE itself a safe food contact substance, but this determination predates modern understanding of PFAS contamination pathways. Consumer guidance remains straightforward: avoid overheating, discard pans with damaged coatings, and never preheat empty non-stick pans on high heat.