Low doses of psilocybin made aggressive fish calmer without stopping social interaction, revealing a selective effect on escalated conflict behaviors. More than 200 mushroom species contain the psychoactive compound psilocybin, especially gilled mushrooms from the genus Psilocybe. In mammals, psilocybin interacts with serotonin receptors in the brain and can affect mood, appetite, aggression, and…

Researchers discovered that psilocybin temporarily increases brain complexity and may reshape neural connections for weeks. Researchers at UC San Francisco and Imperial College London have found that a single dose of psilocybin, the psychedelic compound in magic mushrooms, may cause physical changes in the brain that last for as long as a month after use. [...]