Hormone abuse by adults and children is a serious concern. Recent studies show that 4.2 percent of all high school males and 2.9 percent of high school females report having taken anabolic steroids without a doctor’s prescription. Anabolic steroids are related to testosterone, the major male hormone. Abuse of this hormone can lead to physical and psychological side effects. These problems include breast development among men, and facial hair growth, menstrual problems and a deepened voice in women. The possible long-term health effects can be serious: liver tumors, abnormal cholesterol levels and heart disease, and stunted height among adolescents. High doses have been related to irritable and aggressive behavior. Read our Hormone Abuse section and fact sheets here.