Marijuana (cannabis) is the most popular illegal drug in the world. It is estimated that worldwide, over 160,000,000 people use marijuana every day.
Marijuana use can lead to psychosis.
Psychosis is a major mental disorder, impairing a person's ability to think, respond emotionally, remember, communicate, interpret reality and behave appropriately -- to a degree that the person can't meet the ordinary demands of life. Symptoms can include seeing, hearing, smelling, or tasting things that are not there; paranoia; and delusional thoughts. Depending on the condition, psychotic symptoms may be constant or might come and go.