What is testosterone t

Testosterone T is simply a male hormone. Letters are used to distinguish between males and females because testosterone is a hormone secreted by both men and women. Only in medicine is testosterone replaced by male hormones. It has a significant impact on the development of male reproductive organs and secondary sexual characteristics. Sometimes fluctuations in testosterone T can even affect male fertility, that is, sperm production.

Testosterone (T) is a steroid hormone. It is the main male hormone in the human body and also the most active male hormone. In males, T is mainly secreted by interstitial cells of the testes. Female androgens mainly come from the peripheral conversion of hormone precursors by the ovaries, adrenal cortex and non-endocrine tissues.

T can promote the development of Wolffian ducts into epididymis, vas deferens and seminal vesicles, promote the growth and development of external reproductive organs and secondary sexual characteristics, and affect sperm production. Regardless of male or female, it has an important impact on health and sex, including enhancing sexual desire, strength, immune function, and combating osteoporosis. In addition, T also has important physiological effects such as promoting protein synthesis, promoting bone growth, promoting the production of erythropoietin in the kidneys, counteracting estrogen, maintaining normal sexual function and mental sexual orientation. In recent years, studies have found that testosterone can protect pancreatic cells by enhancing the synthesis of DNA in pancreatic B cells and increasing the content of insulin in cells.

The secretion of T is mainly regulated by luteinizing hormone (LH), and the blood testosterone level has a negative feedback effect on the hypothalamus and pituitary gland. T is mainly degraded and inactivated in the liver, and its metabolite 17-ketosteroid is excreted from the body in the urine. According to statistics, the amount of testosterone secreted by adult males is 20 times that of adult females.

During the follicular phase of a normal female menstrual cycle, the average serum testosterone concentration is 0.43 ng/ml, with a maximum limit of 0.68 ng/ml. If it exceeds 0.7 ng/m1 (equal to 2.44 nmol/L), it is called hypertestosteronemia or hyperandrogenism. Adults: Male 14-25.4nmol/L, Female 1.3-2.8nmol/L; Children: Male <8.8nmol/L, Female <0.7nmol/L; During pregnancy: 2.7-5.3nmol/L.