Testosterone is probably best known for promoting libido, increasing one’s sense of well being and perhaps causing wanted or unwanted hair growth. Testosterone is a steroid hormone derived from cholesterol and secreted primarily by the testes of males and the ovaries of females. Small amounts are also excreted from the adrenal glands.
In men, testosterone plays a key role in the development of reproductive tissues such as the testes and prostate. It also helps promote muscle mass and growth of body hair. Testosterone is essential for health and the prevention of osteoporosis, as it helps maintain bone strength. On average adult males have 7-8 times the level of testosterone as adult females. There are several factors that affect testosterone levels in both men and women. Some of them include the following:
- Weight loss may result in increased levels
- Vitamin D, at levels of 400-1000IU daily, may increase levels
- Zinc deficiency lowers levels
- Aging reduces levels
- REM sleep increases nocturnal levels
- Resistance training increases levels
Indeed testosterone is an important contributor to overall health among both men and women.