Albertus Magnus (Albert the Great) writes in his treatise De vegetabilibus et plantis about not eating mushrooms. “…stop up in the head the mental passages of the creatures [that eat them] and bring on insanity.”
Albertus Magnus Advises People Not to Eat Mushrooms in His Treatise De Vegetailibus et Plantis
Albertus Magnus advises people not to eat mushrooms in his treatise De vegetabilibus et plantis.