- Jul 27, 2018-


Understand the effects of endogenous testosterone (produced naturally by the body) and exogenous testosterone (an artificial form administered as a supplement).

Testosterone is the male sex hormone.  In man, its production is made mostly by the testes, while in women small amounts are produced by the ovaries and the adrenal gland.

Testosterone plays a key role in the health and development of man throughout his life, from the fetal to the old age.

Most of the characteristics that make a male of the human species look like a man comes from the action of testosterone in the body, including the greater presence of body hair, thicker voice, greater muscle mass, greater stature, development of the penis and testicles, etc.

Due to its positive effect on muscle anabolism, from the mid-twentieth century, testosterone has been used as a supplement for athletes seeking better sports performance and for people wishing to increase their muscle mass.