Testosterone

A primary male sex hormone, although it is also present in females in smaller amounts. It is produced primarily in the testes in men and in the ovaries in women, with small amounts produced by the adrenal glands in both sexes. Testosterone plays a crucial role in the development of male reproductive tissues, such as the testes and prostate, and is responsible for secondary sexual characteristics like facial hair, deepening of the voice, increased muscle mass, and bone density. In addition to its role in sexual development, testosterone is involved in regulating mood, energy levels, libido, and overall health. It also influences behaviors such as aggression and competitiveness. In both men and women, testosterone levels can fluctuate with age, and imbalances can lead to various health issues.