Participants took 25mg of psilocybin, reporting deeper psychological insight and better wellbeing a month later Participants took 25mg of psilocybin, reporting deeper psychological insight and better wellbeing a month later A single dose of psilocybin, the active ingredient in magic mushrooms, can induce anatomical changes in the brain, according to research among people who took the psychedelic compound for the first time. Scientists spotted apparent changes in the brain’s structure which were