artificially produced hormones that mimic testosterone
promote muscle and bone growth and reduces recovery time
increased risk of diseases (liver cancer, organ damage)
increased risk of infertility
increased risk of injury - especially tearing you tendons
increased risk of hair loss
increased risk of acne
increased risk of high blood pressure , heart attack, heart disease
increased risk of enlarged breasts in men and facial hair and deeper voice in women
an effect on emotional healthy, increasing aggressive behaviour and depression