Egon, You have raised a valid concern that is a hazard for people in industry who are involved with the production of Teflon. We need to keep an eye on the unfolding story staying alert to any credible reports regarding problems with human or food to Teflon contact at temperatures well below 460F.
At the current time Teflon is used in internal medical devices such as replacement joints. There are well established and definitely non-trivial procedures in place that candidate items must make it past to be accepted for use internally such as heart valves and artificial knees, hips, etc. I woudl be surprised if the medical approval authorities and procedures missed a dangerous substance to be put into a persons body for an extended period of time (maybe decades.) It is possible so we will have to monitor the situation to be sure and be comfortable with our non-stick cookware.
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