the "steroids can kill" mantra is just that, an advertising campaign intended to further an ideology.
study on the matter- a bit vague but interesting...
Postgrad Med. 1988 Sep 15;84(4):37-8, 41-3, 47-9. Related Articles, Links
Anabolic steroid use by athletes. How serious are the health hazards?
Windsor RE, Dumitru D.
Department of Physical Medicine and Rehabilitation, University of Texas Health Science Center, San Antonio.
Use of anabolic steroids is widespread in the athletic community, especially among power athletes, who have used them for about 30 years. Despite educational and preventive measures, steroid use has increased. Controversy continues regarding the enhancement of athletic performance and the incidence of major side effects. Some investigators have suggested that the hazards of anabolic steroids may be overstated in the diseased population and are minimal or absent in healthy subjects. Yet, many questions are unanswered. Current data do not link life-threatening side effects with intermittent use of anabolic steroids. However, many concerns remain. Dangerous situations include use of anabolic steroids by adolescents, preadolescents, and persons with liver or heart disease and use of oral compounds in high doses for long periods. A coordinated team approach (with representatives from sports, medicine, advertising, and the pharmaceutical industry) is needed to determine the real risks of anabolic steroids to athletes who are considering their use.