The Deadly Fungus That Caused Hallucinations

Ergotism is a terrifying condition caused by eating moldy rye bread. It triggers intense hallucinations and a burning sensation so severe it was historically known as Saint Anthony’s Fire.

This illness comes from a fungus that grows on grains, producing chemicals related to LSD. Throughout the Middle Ages, entire villages were sometimes struck by outbreaks of madness and physical pain. People often confused these symptoms with demonic possession or divine judgment. Surprisingly, this toxic fungus served as the primary source for the early synthesis of modern medicine.