Can scratched Teflon pans release toxic microplastics into your food?
Yes. PTFE (Teflon) microplastics and nanoplastics cause oxidative stress, mitochondrial damage, and cell death in lab studies.
What's actually in it
Polytetrafluoroethylene (PTFE), better known as Teflon, coats most nonstick pans. When you scratch the surface with metal utensils, stack pans together, or use abrasive sponges, tiny PTFE particles flake off into your food. A single scratched pan can release millions of micro- and nanoplastic particles per cooking session.
PTFE is a fluorinated plastic, meaning it's part of the same chemical family as PFAS "forever chemicals." Unlike regular plastics, PTFE particles carry fluorine atoms that make them uniquely persistent and potentially more harmful to cells.
What the research says
A 2025 study in Regul Toxicol Pharmacol exposed human cells to PTFE microplastics and nanoplastics at concentrations that match real-world exposure from cookware. The particles caused oxidative stress, mitochondrial damage, and cell death.
The nanoplastics (the smallest particles) did the most damage because they can enter cells directly. Once inside, they disrupted the mitochondria, which are the energy-producing structures every cell depends on. Without functioning mitochondria, cells either malfunction or die.
The study showed that PTFE particles aren't the harmless bits of plastic the cookware industry has claimed. They're biologically active and toxic to cells at real-world doses. If your nonstick pan has any scratches, chips, or worn spots, it's time to replace it with ceramic, cast iron, or stainless steel.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Polytetrafluoroethylene (PTFE, Teflon) microplastics and nanoplastics induce oxidative stress, mitochondrial damage, and cell death. | Regul Toxicol Pharmacol | 2025 |
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