Are Teflon pans dangerous for health and the planet? All the facts

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February 27, 2025

On February 27, 2025

Introduction to Are Teflon Pans Dangerous?

Are Teflon pans dangerous for our health? This is an increasingly common question among my readers, and it is not difficult to understand why: non-stick pans are a common feature in kitchens all over the world because of their practicality, allowing you to cook with less fat and making them easier to clean.

Just think about that only in the United States, it is estimated that 70% of all cookware sold are now coated with some type of nonstick surface, mostly Teflon.

However, behind these qualities lie potential health and environmental risks, particularly related to the presence of PFAS (perfluoroalkyl substances), compounds better known as “forever chemicals“, which can be released during the production and use of Teflon pans and accumulate in the human body as well as in the environment(1,2).

What will you find in this article

This article examines the scientific evidence on the dangers of Teflon, the material from which many non-stick pans are made, and answers questions such as:

‘What is Teflon and why are Teflon pans said to be dangerous to health?’,
‘Teflon pans and PFAS: the health risks?’,
‘How can they harm the environment?’,
‘Which Teflon pans are banned in Europe?’,
‘How can we reduce the risks associated with their use?’,
‘Final conclusions’.

What is Teflon and why are Teflon pans said to be dangerous to health?

Teflon is the brand name for PTFE (polytetrafluoroethylene), a polymer discovered by pure chance in 1938. Although initially used in industry (particularly in the military, automotive and medical sectors), it is best known for its domestic use as a non-stick coating for pans and cookware.

Although PTFE is chemically stable and generally recognised as safe (GRAS) at low temperatures, it can become dangerous at temperatures above 260°C of 500°F when it begins to decompose and release toxic fumes(3). And that’s not all!
The risks of PTFE or Teflon manifest themselves in two main ways:

1. Health risks by ingestion

Under normal conditions, PTFE is chemically stable and ‘inert‘, meaning that it does not react readily with other substances. Although the accidental ingestion of small particles of PTFE through the use of damaged Teflon pans is not an immediate danger, the risk of accumulation can be considered tangible.

2. Health risks by inhalation

The real risk comes from overheating Teflon pans. At temperatures above 260°C or 500°F, Teflon begins to decompose by pyrolysis, releasing toxic gases which, if inhaled, can cause serious symptoms such as breathing difficulties and polymer fume fever, better known as “Teflon fume fever“(4). A condition that mainly affects those who frequently use Teflon pans at high temperatures.
It is also sadly and scientifically known that little birds such as canaries or budgies with sensitive respiratory systems can die from Teflon fumes(5).

Teflon pans and PFAS: the health risks?

PFAS, or 'forever chemicals', are chemical compounds that do not readily break down in the environment or in the human body. Teflon is a derivative of PFAS, as the manufacturing process of PTFE uses perfluorinated chemicals to improve the non-stick properties of the material.
These compounds have been linked to a number of serious health effects, including:

cardiovascular disease,
endocrine disruption,
infertility and
certain types of cancer, particularly liver and kidney cancer(6).

Exposure to PFAS

It is not just contact with food that causes PFAS exposure, but the conditions in which the pans are used. When Teflon pans are overheated to high temperatures (above 260°C or 500°F), the Teflon (PTFE) coating can begin to decompose, releasing toxic vapours containing PFAS. These vapours can be inhaled or transferred to food during cooking, posing a direct health risk as explained above(7).

I should also point out that since people who have never used Teflon pans are also being exposed to PFAS - through PFAS-contaminated drinking water and air (a national survey in the US found that 97% of the population has some level of PFAS in their blood, including newborns) - it is reasonable to assume that those who misuse Teflon pans are being exposed to much higher levels.

TO DISCOVER THE HIDDEN RISKS OF AIR FRYERS

How can they harm the environment?

Having answered the question "Are Teflon pans dangerous to your health?", let's analyse whether the use of Teflon pans also has an impact on the environment. The production of PTFE, which is derived from PFAS, is highly polluting and contributes to the release of hazardous chemicals into the environment at three stages:

production,
use and
disposal of Teflon pans.

The gases emitted during the manufacture of Teflon pans are a significant source of air pollution: as the compounds are sprayed onto the surface of the pan, usually twice, and as there is no way of monitoring how much is actually released into the atmosphere, the damage to date is incalculable(8).
Then, during use, the degradation of pan coatings can lead to the dispersion of toxic compounds into water and soil, again incalculably.
And the same risks threaten the environment when the pans have to be disposed of, given the total ignorance of the risks associated with PFAS on a global scale: here too we have incalculable but real risks(9).

The durability and massive use of Teflon pans

Moreover, if we assess the risks associated with the massive use of Teflon pans (in 2020, the global demand for non-stick pans will be 206.1 million units) and the short life of Teflon pans, which very often break after only 2 years - instead of the expected 6 years specified in the warranty - we see that the problem is much wider, with potentially devastating consequences for ecosystems.

Which Teflon pans are banned in Europe?

In Europe, the use of PFOA (perfluorooctanoic acid) in Teflon pans has been banned as of 4 July 2020, according to European Union regulation (2020/784). However, despite the regulations, some consumer tests by independent institutes suggest that some pans labelled 'PFOA-free' may still contain traces of PFOA and other toxic PFAS(10, 11, 12).
And according to rumours circulating in the food security sector, don't be surprised if Teflon pans are banned altogether within a few years!

How can we reduce the risks associated with their use?

After reading what we have said so far in our article "Are Teflon pans dangerous for health?", you may be concerned about the risks to your health. If this is your case, here is the good news: yes, you can take some precautions to reduce your exposure. Let's see how:

Avoid using metal utensils that can damage the coating;
Do not use Teflon pans at temperatures above 260°C or 500°F;
Do not cook acidic foods such as tomatoes, lemons or vinegar;
Do not wash your Teflon pans in the dishwasher;
Avoid thermal shocks, such as adding frozen foods to hot pans;
If the coating is damaged, replace the pan immediately.

Final Conclusions

In this article, entitled "Are Teflon pans dangerous for health and the planet?", we examined the scientific evidence that Teflon pans can be dangerous for health and the environment, especially if they are used improperly or damaged. Although the risk of exposure to PFAS can be reduced by following safety precautions, it is important to be aware of the dangers of these products and to replace them with safer alternatives when necessary.
So here's my verdict: if you have to buy new pans, make sure they are both Teflon and PFAS-free.
On the other hand, if you already have Teflon pans and have strong and understandable doubts, you should definitely read the following article:"When to throw away Teflon pans?".

Happy cooking and happy revolution to all!

Bibliography
1) Aras, Deniz, et al. “PFAS–Forever Chemicals.” Report EUT-P4-22FS-04/Institute for Biomass and Resource Efficiency (2022).
2) Renfrew, Daniel, and Thomas W. Pearson. “The social life of the “forever chemical”: PFAS pollution legacies and toxic events.” Environment and Society 12.1 (2021): 146-163.
3) Bennett, D., et al. (2021). “PFAS contamination in cookware: A study on contamination pathways.” Science of the Total Environment.
4) Liu, X., et al. (2018). “Health risks associated with exposure to PFAS.” Journal of Environmental Health Perspectives.
5) Caekebeke, Nele & Antonissen, Gunther & Backer, P. & Croubels, Siska. (2016). Polytetrafluoroethylene intoxication in birds. 85. 3-8.
6) Wang, Z., et al. (2017). “Human health effects of perfluoroalkyl and polyfluoroalkyl substances.” Environmental Health Perspectives.
7) Zhang, Z., et al. (2020). “Levels of PFAS in cookware and implications for human health.” Environmental Science & Technology.
8) Lohmann, Rainer, et al. “Are fluoropolymers really of low concern for human and environmental health and separate from other PFAS?.” Environmental science & technology 54.20 (2020): 12820-12828.
9) Herzke, Dorte, Elisabeth Olsson, and Stefan Posner. “Perfluoroalkyl and polyfluoroalkyl substances (PFASs) in consumer products in Norway–A pilot study.” Chemosphere 88.8 (2012): 980-987.
10) Sinclair, Ewan, et al. “Quantitation of gas-phase perfluoroalkyl surfactants and fluorotelomer alcohols released from nonstick cookware and microwave popcorn bags.” Environmental science & technology 41.4 (2007): 1180-1185.
11) 60 Millions de Consommateurs. PFAS : les poêles les plus sûres, notre comparatif 30 Gennaio 2025
12) Consumer Reports. You Can’t Always Trust Claims on ‘Non-Toxic’ Cookware. 22 Ottobre 2022