worn out frying pans

[INQUISITOR63]

Frying pans dont last long these days especially if they have been subjected to very hot temperatures
where the teflon has started to dissappear. My question is this and is probably directed to a person with a chemical or medical beackground. If a Pan is worn or the teflon shows signs of blackening or dissappearing, is it unsafe to carry on using it for a further short period with respect to carcinogenic or other "reprisals" ensuing in the gut ? ( or bloodstream ?)