IntroductionAndrogenic-anabolic steroids are artificial medications that aim to replicate the effects of the male hormone testosterone. They are generally used to modify sporting activity, but research has shown that they cause major health problems. The negative effects resulting from anabolic steroid abuse are a concept that has concerned scientists for many years. In this literature review, health problems that appear specifically in male athletes will be addressed. The number of sperm in the reproductive system, the size of the left ventricle in the cardiovascular system, and the behavioral issue of aggression will be examined more closely to illustrate to readers what has been written about the adverse effects of anabolic steroids. This is so that they can understand the development of ideas regarding the long term effects of steroid abuse on the body. The correlation between sperm count and steroid use in men. The literatures on the adverse effects of anabolic steroids agree that anabolic steroids will harm the reproductive system. system. However, many researchers choose to focus on the effect of anabolic steroids on sperm. A dilemma seen in the case of steroid abused sperm is lower numbers. Saied Karbalay-Doust from Shiraz University of Medical Sciences conducted the study “The reversibility of sperm quality after discontinuation of nandrolone decanoate in adult male rats” to observe the reproductive effects that reportedly resulted from injecting weekly doses of nandrolone decanoate (a compound found in anabolic steroids) into various rats for 14 weeks. After the trial was over, Karbalay-Doust came to the conclusion that sperm counts would drop significantly if the body was abused with anabolic steroids for a long time (...... middle of paper ...... ood lipids and echocardiographic parameters in bodybuilders." International Journal of Sports Medicine 10 (2001): 62-66. PrintBreuer M, McGinnis M, Lumia A, Possidente B. "Aggression in male rats receiving anabolic-androgenic steroids: social effects. and environmental provocation." Hormone Behavior 40 (2001): 409-418. PrintMcGinnis M, Lumia A, Breuer M, Possidente B. "Physical provocation potentiates aggression in male rats receiving anabolic androgenic steroids. S, Wilson M, Sufka K, Davis W. “The effects of co-administration of cocaine and nandrolone on aggression in male rats” Progessive Neuropsychopharmacol Biology Psychiatry 20.5 (2001): 839 – 856. PrintVanberg P, Atar D. “Anabolic-androgenic steroid abuse and the cardiovascular system.” » Handbook of Experimental Pharmacology 195 (2010): 411-457. Print