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Vitamin K2 increases testosterone production in rats

  1. Menaquinone-4 enhances testosterone production in rats and testis-derived tumor cells

    Conclusions: MK-4 stimulates testosterone production in rats and testis-derived tumor cells via activation of PKA. MK-4 may be involved in steroidogenesis in the testis, and its supplementation could reverse the downregulation of testosterone production in elders.

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    Also, there is a study that says Vitamin K2 is inversely correlated with prostate cancer, which supports Ray Peat's theory that excess estrogen causes prostate problems.
     
  2. Nice!
     
  3. The Thorne K2 is MK-4.
     
  4. Vitamins K2 and E (gamma tocopherol) both support prostate health. Vitamin E has effects similar to progesterone, and reduces estrogen. Vitamin K2 increases testosterone, which also opposes estrogen.