 A small study has examined the effect on the brain of the psychedelic ingredient in magic mushrooms. Researchers took 30 MRI scans of the brains of seven participants before, during, and three weeks after a psychedelic trip on psilocybin. They found the brain disconnects from its typical pathways and reconnects to different parts of the brain. Those new pathways may be responsible for the success of some psychedelic drugs in treating mental health disorders like anxiety and depression.