It's easy, incredibly easy, to overheat cookingware unintentionally. Add oil to a pan/wok that's overheated and it decomposes. Additionally, if the cookingware is coated with Teflon, above 300 °C this degrades into toxic compounds and can lead to "teflon flu" [1].
You can buy nonstick wok-shaped pans but real woks that would be used for high temperature cooking are usually not nonstick. The original assertion that I was responding to was suggesting that the cause of the higher lung cancer rates in asian americans might be because of high temperature wok cooking.
I have no idea if nonstick pans are associated with higher lung cancer rates but even if they are I have no reason to think that asian americans are more likely to use nonstick pans, so the fact that it is easy to overheat nonstick pans in general might not explain asian americans having higher lung cancer rates.
[1] https://en.wikipedia.org/wiki/Polymer_fume_fever