or exercise, are likely too quick to be controlled by the hypothalamic pituitary gonadal axis; instead, these surges may be driven by the rapid release of sympathetic catecholamines (for additional review of this slower versus faster system of testosterone secretion, see Casto and Edwards, 2016a)...
Maximal Testosterone Suppression in Prostate Cancer – Free Versus Total TestosteroneKyle O. RoveE. David CrawfordMassimo PerachinoJuan MoroteLaurence KlotzPaul H. LangeGerald L. AndrioleAlvin M. MatsumotoSamir S. TanejaMario A. Eisenberger
Conclusion: Although older men with low sexual desire had significantly lower total and free T, our study failed to show significant correlations between total T, E2 or TT/E2 ratio and sexual desire score of IIEF and SDI-2. However, true androgen deciency (FT) and true T/E2 imbalance (...
“Low” was defined by the researchers as a total testosterone blood level of 320 nanograms per deciliter (ng/dl) or less and a free testosterone of 220 picomoles per liter or less. Anything more nebulous, in other words, and you’re just turning to TRT because life is getting weird ...
(2001) Longitudinal effects of aging on serum total and free testosterone levels in healthy men. Baltimore Longitudinal Study of Aging. J Clin Endocrinol Metab 86: 724–731 Article CAS Google Scholar Vermeulen A (2001) Androgen replacement therapy in the aging male—a critical evaluation. J ...
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Changes in sex hormone levels with aging or illness may lead to metabolic disorders. Moreover, the ratio changes in men versus women may have distinct pathological responses. Since little is known about sex hormone action on muscle metabolism, we examine
Biased mating due to female preferences towards certain traits in males is a major mechanism driving sexual selection, and may constitute an important evolutionary force in organisms with sexual reproduction. In birds, although the role of male ornamentation, plumage coloration, genetic dissimilarity, an...
(C) Distribution ratios comparing the effects of chromosomal sex and testosterone on global gene expression of XX in TP/baseline gene expression (Y-axis), versus global gene expression changes due to testosterone of XY in TP/baseline gene expression (X-axis). Full size image Sex Chromosome ...