To the uninitiated, psilocybin—the substance that gives ‘magic mushrooms’ their psychedelic qualities—could be dismissed as a recreational drug. Like many other psychedelics, it is banned by the U.S.

Psychoactive drugs are substances that affect the brain. The types range from heroin to caffeine. These substances can affect awareness, thoughts, mood, and behavior. Depending on the situation, the ...

Addiction is a long-term brain disease. When addiction is related to drugs or alcohol, the condition is also called a substance use disorder. Addiction has no cure, but it can be managed with ...