Testosterone is often referred to as the male hormone. But, it is also produced by women, in smaller amounts. It is produced in the testes in men, ovaries in women, and adrenal glands in both females and males. This androgen hormone is handles strength, muscle growth, energy, fat distri...
Aromatization of testosterone to estradiol occurs in primates, including humans, but does not necessarily have a major role in masculinization of the primate brain. Instead, both testicular production of testosterone and intact androgen receptors are necessary to defeminize the human brain as evidenced...
Since penile development and growth occurs most significantly during adolescence, there is a possibility that penile growth happens at different ages for males of different racial groups. According to astudypublished in the journal ofPediatrics(2009), sexual maturation does indeed begin and peak at di...
A clinical study to assess efficacy and safety of daily administration of a nestorone/testosterone gel when administered in males,National Institutes of Health - Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD),Inte
which was reflected in actual population differences in intra-sexual competition29,30. In addition, we undertook an experimental design, in which males were controlled for age, body size and faecal hormone metabolites (testosterone and cortisol, see Methods), and were exposed to two social environme...
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One answer would be to perform vasectomies in males and tubal ligation in females, to be followed after maturity by ovariohysterectomy in females to prevent mammary cancer and pyometra. One possible disadvantage is that vasectomy does I believe it is important that we assess each situation indivi...
John Patterson was the first to study lions in Tsavo and Serengeti B. most scientists agree that high testosterone levels account for the manelessness of Tsavo’s lions C. Gnoske thinks that Tsavo’s male lions won’t grow long manes even at an old age. ...
In the adult, serum inhibin B shows a clear diurnal variation closely related to that of testosterone. The administration of FSH increases the secretion of inhibin B in normal men, but is much more pronounced in males with secondary hypogonadism. The treatment of infertile men with FSH, however...
does not really explain the spike but the one tied to artificial light certainly does fit the modern obesity epidemic. Fake light drive blood glucose higher, so one can get the clinical picture that people appears to have high blood glucose and high insulin levels when in fact they are not ...