What is the primary male sex hormone?

The primary male sex hormone is testosterone, which plays a crucial role in the development of male reproductive tissues such as the testes and prostate. It is responsible for promoting secondary sexual characteristics, such as increased muscle mass, bone density, and body hair growth during puberty. Testosterone is produced mainly in the testes and is vital for spermatogenesis, the process of sperm production.

Understanding the function of testosterone is significant in the context of male reproductive health and overall physiological processes. While estrogen and progesterone are primarily recognized as female hormones involved in the menstrual cycle and pregnancy, they are present in smaller amounts in males, but they do not serve the same roles as testosterone. LH, or luteinizing hormone, is involved in regulating testosterone production but is not the hormone itself.