- ↑ Berg J, Tymoczko J, Stryer L. (2012) Biochemistry, Seventh edition, New York: WH Freeman
Due to it's properties as a muscle builder, synthetic anabolic steroids are sometimes taken by athletes who are aiming for muscular hypertrophy. Even in small doses this can have side effects. Side effects seen in males include; testicular atrophy, hair growth and mood swings. As well as this, the body often stops secreting as much testosterone naturally.