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Tribulus terrestris - 0 views

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    Tribulus terrestris is a rejuvenating tonic for the genitourinary system. A cooling and nourishing herb, Tribulus terrestris soothes the membranes of the urinary tract while promoting the healthy flow of urine. Tribulus terrestris is used in ...
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    Tribulus terrestris is a rejuvenating tonic for the genitourinary system. A cooling and nourishing herb, Tribulus terrestris soothes the membranes of the urinary tract while promoting the healthy flow of urine. Tribulus terrestris is used in ...
Nathan Goodyear

The Effect of Oral Feeding of Tribulus t... [Int J Fertil Steril. 2013] - PubMed - NCBI - 0 views

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    Tribulus found to increase sex hormone production in opiate addicted male rats.  Opiates are known causes of low T in men.
Nathan Goodyear

Redefining Metabolic Syndrome in Men (July 2012) Townsend Letter for Doctors & Patients - 0 views

  • Approximately 95% to 98% of testosterone is bound to a carrier protein at any given time, leaving just the remaining 2% to 5% as completely unbound and available for tissues to use
  • most serum laboratories offer a free testosterone level, which is a calculated value based on SHBG levels or determined with equilibrium dialysis
  • the hormone enters the salivary gland by passive diffusion
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  • Testosterone has a known age-related decline, and total levels typically drop by approximately 1.6% per year beginning for most men in their 30s
  • As estrogen levels rise, they prompt the body to produce more SHBG, which in turn has a higher binding affinity for testosterone, and drives the unbound fraction of the testosterone pool down even further
  • When the increase in SHBG is taken into account, the age-related decline in the level of hormone that can be used by the body is closer to 2% to 3% per year.
  • Stinging nettle (Urtica dioica), an herb commonly used for allergies, can also be employed to bind to SHBG, which leaves more testosterone available to tissues
  • Leptin, an adipose-derived peptide hormone that regulates appetite and metabolism, has been shown to directly inhibit testosterone production in animal models
  • tumor necrosis factor alpha (TNF-alpha) and interleukin-1 (IL-1) further inhibit Leydig cell testosterone production
  • Natural aromatase inhibitors include the bioflavonoids chrysin and luteolin
  • Zinc deficiency causes an upregulation of the aromatase enzyme
  • Testosterone reduces lipoprotein lipase (LPL) activity
  • there are several herbs that can work to boost testosterone levels, including longjack (Eurycoma longifolia), horny goat weed (Epimedium grandiflorum), and tribulus (Tribulus terrestris).
  • the majority of the hormone is bound to carrier proteins including sex hormone binding globulin (SHBG) and albumin
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    nice and short review on testosterone and men's  health.
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