Marijuana users entering substance abuse treatment in the U.S. are most likely adolescents or young adults.
Research among college youth indicates that hashish use tends to result in more deviant and delinquent behavior, aggression, and greater rebelliousness.
Men with a history of anabolic steroid use often report cases of impotence; a reduction in the amount of sperm has also been directly linked to short term steroid use.
Magic mushroom use may result in the user's senses get mixed, and one might think that they can hear colors and see sounds.