Testosterone

Testosterone is a steroid? hormone from the androgen?s group. Its main function is as the male sex hormone.

Testosterone was first isolated from bull in 1935. Today, artificially produced testosterone is used for medical purposes, such as the treatment of underdevelopment of the testes?, or as a prevention of osteoporosis, which is caused by a lack of androgen?s.

Its abuse by athlete?s to enhance muscular development is illegal.