Anabolic steroids are a derivative of the hormone testosterone and have been used by athletes to build muscle mass and increase endurance. Consider the following side effects of taking anabolic steroids:

• stunted growth in young people
• decreased sperm production
• testicular atrophy (shrinking)
• baldness
• development of breast glands (in men)
• psychotic episodes
• depression
• mood swings
• liver cancer
• kidney damage
• increased irritability and aggression

Plus it can be addicting. Besides, who wants to looks like the guy in the above picture?