Testosterone is the primary male sex hormone and androgen in males. [4] In humans, testosterone plays a key role in the development of male reproductive tissues such as testicles …

Testosterone is a hormone that your gonads (testicles or ovaries) mainly produce. Testosterone levels are naturally much higher in males.

Dec 19, 2025 · Testosterone, hormone produced by the male testis that is responsible for development of the male sex organs and masculine characteristics, including facial hair and …

Testosterone is the major sex hormone in males. It is essential to the development of male growth and masculine characteristics. Signals sent from the brain to the pituitary gland at the base of …

Oct 30, 2025 · High or low testosterone levels in men can cause symptoms and signs of weight gain, osteoporosis, decline in sexual desire, and a decline in physical energy and stamina. …

Jul 18, 2023 · Testosterone is the key male sex hormone. Its functions include regulating fertility, muscle mass, fat distribution, and red blood cell production.

Mar 18, 2024 · Testosterone, the primary sex hormone in men, is responsible for many physical characteristics that are considered masculine. Produced by the pituitary gland, testosterone …

Mar 17, 2023 · The hormone, which is found in both men and women, is most often associated with sex drive, but it also affects bone and muscle mass.

Apr 18, 2025 · Testosterone is used in men and boys to treat conditions caused by a lack of this hormone. Includes testosterone side effects, interactions and indications.

Oct 13, 2024 · Testosterone is the best-known androgen (male hormone), but females produce it too. In both sexes, low testosterone can reduce libido and cause fat gain, muscle loss, and …