The original post: /r/askscience by /u/ToeNo6889 on 2024-11-10 21:01:35.

Polytetrafluoroethylene is used in myriad products from dental floss to lubricant, and it is a fluoropolymer that can be manufactured from perfluorooctanoic acid—a known carcinogen.

Why and how is polytetrafluoroethylene safe for human use and consumption?