logoalt Hacker News

timrtoday at 2:20 PM4 repliesview on HN

> People cook with teflon-coated pans for the tiny convenience over a nitrided, ceramic, or seasoned cast iron pan.

...which has absolutely nothing to do with the PFOA that you might reasonably be concerned about. Teflon is chemically inert. It's literally used for human body implants. Teflon-coated pans are not your enemy. Fire-fighting foam, on the other hand -- you probably shouldn't bathe in it.

Any test that "detects" teflon in the generic category of "PFAS" is a hopelessly flawed test [1]. Unfortunately, a great many of these papers don't make the distinction, whether intentionally or due to incompetence, or simply because it's far easier to do that, and it gets better headlines.

[1] Important aside: historically, several of the major manufacturers of teflon had problems with PFOA contamination around the factories due to manufacturing processes. This is unrelated to your personal use of a Teflon pan, and also, the process has been changed. If you want to argue that the new process is also polluting, fine, make that argument -- but don't assert that the use of the final product is itself unsafe.


Replies

hvb2today at 3:59 PM

Plenty of people will use those pans and

Overheat them, which means the stuff gets into the air. Many many pet birds have died of this only because they're more susceptible

Use the wrong material in them meaning the start to scratch the Teflon layer.

I'm not saying you cannot use them right, but too many people don't and the product isn't safe when improperly used. This is true for many products but in this case plenty of people aren't aware they're holding it wrong.

rdntoday at 4:04 PM

Teflon is not inert at very high temperatures. Nobody ever overheats a pan?

tristortoday at 4:02 PM

> ...which has absolutely nothing to do with the PFOA that you might reasonably be concerned about. Teflon is chemically inert. It's literally used for human body implants. Teflon-coated pans are not your enemy. Fire-fighting foam, on the other hand -- you probably shouldn't bathe in it.

Unfortunately, that is not the case. Yes, Teflon is inert but only when it's not exposed to high temperatures (>350F). When heated, such as in a non-stick pan, Teflon gives off fumes which contain byproducts including breakdowns back into PFAS compounds. So /YES/ the use of the final product (as cookware) /is/ unsafe. NOBODY SHOULD BE USING TEFLON NONSTICK COOKWARE.

convolvatrontoday at 2:57 PM

the concern is not about immediate effects of using products, but the fact that they are now everywhere in the environment, including water supplies and our own blood streams.