The real risks of psychedelics, explained by an expert | Dr. Matthew Johnson

The real risks of psychedelics, explained by Johns Hopkins professor Dr. Matthew Johnson. Subscribe to Big Think on YouTube ► Up next, Psychedelics: The scientific renaissance of mind-altering drugs ► A pattern emerges when you compare the harmfulness of different types of psychoactive drugs: alcohol and hard drugs like heroin and crack cocaine rank as the most harmful, while psychedelic substances like psilocybin and LSD score as the least harmful. It’s perhaps not too surprising. After all, psychedelic substances are generally non-toxic and medically safe to consume. The drugs do not come with the same kind of overdose risks that substances like alcohol and heroin do. Still, psychedelics can have profound effects on the psyche. Bad trips are a real phenomenon. But bad trips are sometimes the result of an interplay between the drugs and the user’s environment