Many side effects occur from abusing these steroids. Heart, liver, and immune system problems can develop. Men's testicles shrink, the prostate gland enlarges, and sperm levels drop. Behavior changes may include aggression, paranoia, mood swings, low sex drive, and depression. Blood doping is when blood or blood products are given to improve an athlete's endurance and speed.
Side effects can include strokes, allergic reactions and infections.
Human growth hormone is widely abused by body builders. They take increased doses to decrease fat and increase muscle mass. The side effects are heart and nerve diseases, glucose intolerance, and higher levels of blood fats. Clenbuterol is a drug that affects the central nervous system. It affects growth, muscle, and body fat.