Arsenic Eaters

A group of Austrians who have been nicknamed "Arsenic Eaters" used to ingest doses far beyond the lethal dose of arsenic trioxide without any apparent harm. In 1851, the medical world learned about the practice of arsenic eating among peasants who ate up small doses initially and gradually built up to 300-400mg as a mithridate to help enable strenuous work at high altitudes in the Alps.