What is the primary function of testosterone?

The primary function of testosterone is the development of male secondary sexual characteristics. This hormone is crucial during puberty, as it promotes the growth of facial and body hair, deepens the voice, and enhances muscle mass and strength. Additionally, testosterone is vital for the development of reproductive tissues, such as the testes and prostate.

While testosterone does have roles in protein synthesis and may influence other bodily functions, its primary and most recognized role in the male body is related to the development of secondary sexual characteristics. Understanding this function is important, as it illustrates how hormones can influence physical development and sexual differentiation.