What is the primary function of testosterone in males?

The primary function of testosterone in males is to enhance libido and promote the development of secondary sexual characteristics. Testosterone is a key androgen hormone that plays a crucial role in male sexual development and function. During puberty, testosterone is responsible for the growth of facial and body hair, deepening of the voice, and increased muscle mass among other physical changes. Additionally, it plays a significant role in influencing sexual desire or libido, contributing to the overall sexual health of males.

While testosterone also has roles in other physiological processes, such as stimulating sperm production and supporting the growth of the testes, its most prominent and recognized functions revolve around libido and secondary sexual characteristics. This makes it essential for reproductive health and the maintenance of male-specific traits throughout life.