It causes beard growth, a deep voice, plump muscles and the reproductive instinct - the hormone testosterone. A lack of testosterone leads, among other things to muscle atrophy, osteoporosis and weight gain. As the German Green Cross reports, testosterone is also important for well-being. It promotes assertiveness and makes men a little more aggressive than women. And it is an indispensable reproductive factor because it allows the spermatozoa to mature and is thus a prerequisite for children to be conceived. Incidentally, in women, the ovaries and adrenals produce small amounts of testosterone.
Men also get into menopause
The male sex hormone testosterone is formed in the testes, six milligrams daily. The hormone is broken down by the body in about twelve minutes and must therefore be renewed again and again. This is controlled in a specific part of the diencephalon, the hypothalamus, which monitors the entire hormone system in men and women and coordinates it with the nervous system.
Every two to four hours hypothalamic release hormones are produced. These activate the pituitary gland, also called pituitary gland, to emit messenger substances. The messenger substances stimulate other glands in the body to produce hormones and release them into the blood. Now the hypothalamus recognizes the increased hormone levels in the blood and then throttles the production of the release hormones. This cycle ensures a balanced hormone level.
From 40, the testosterone level drops
Around the age of 40, the testosterone level in men decreases, but very slowly. About one third of all men in the second half of life are affected. Hormone production decreases annually by about one to two percent, but these are only averages. Some men still have hormone levels that are comparable to thirty-year-olds even in old age.