Psilocybin mushrooms, commonly known as magic mushrooms, mushrooms or shrooms, are a polyphyletic, informal group of fungi that contain psilocybin which turns into psilocin upon ingestion.
This chemical then interacts with the part of the brain that regulates abstract thinking, thought analysis, mood, and perception. This results in the hallucinogenic effects and distortions of time and reality common to shroom use.
Magic mushrooms have become a popular medicine and continue to make a name for itself. This is in large part because of the wide range of therapeutic effects that shrooms provide users.