Hello! This is the story of how Polytetrafluoroethylene, brand name Teflon, has poisoned almost the entire world with Perfluorooctanoic acid, PFOA, which is cancer-causing. The amount of PFOA in the average person isn't necessarily harmful, but nevertheless PFOA can be found in dolphins in Florida, the rain in Tibet, household dust, and food and water. It's basically everywhere. Yay.