There are also many physical side effects that occur with taking anabolic-adrenergic steroids. These side effects differ between men and women. Men who use anabolic-adrenergic steroids often experience breast development, shrinking of testicles, decreased sperm count, and impotence. Women who take them often take on more masculine characteristics. Their voices deepen, they grow more hair on their face and body, and sometimes have problems bearing children. Also, teenagers who take anabolic-adrenergic steroids may experience stunted growth and may never reach their full height.
Stacking is taking multiple types of steroids at once or mixing oral and injectable formulations. Many steroid abusers believe stacking increases results, but this method has not been scientifically proven.