The use of anabolic steroids is banned from sports for good reasons.
In males, the use of anabolic steroids can cause not only low sperm quality and count but also a drop in testosterone levels. These effects are usually reversible. However, many men are tempted to use testosterone supplements together with steroids. The use of testosterone supplements damages the ability of the testes to produce sperm and this cannot be reversed or cured.
In females, the use of anabolic steroids can cause menstrual and ovulation problems, and also excessive hair growth on the body or on the face.