Steroid use has also been found among people with a history of abuse or assault who wish to build muscles in order to protect themselves better. Steroid use is banned by the International Olympic Committee and many other amateur and professional sports organizations. But because drug testing is costly, tests of professional athletes are generally “random,” and are often preceded by a warning. Regular mandatory testing is standard only at the international level of competition.
Even though anabolic steroids do not cause the same high as other drugs, they can lead to addiction. Studies have shown that animals will self-administer steroids when they have the chance, just as they do with other addictive drugs. People may continue to abuse steroids despite physical problems, high costs to buy the drugs, and negative effects on their relationships. These behaviors reflect steroids' addictive potential. Research has further found that some steroid users turn to other drugs, such as opioids, to reduce sleep problems and irritability caused by steroids.