Psilocybin mushrooms are non-addictive and rarely abused. They do create short-term increases in tolerance of users, thus making it difficult to abuse them since the more often they're taken, less effects take place.[11] Poisonous (sometimes lethal) wild picked mushrooms can be easily mistaken for psilocybin mushrooms, but true psilocybin mushrooms are non-toxic, and the National Institute for Occupational Safety and Health, a branch of the Center for Disease Control, rated psilocybin less...