J
j.
Guest
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.
Link
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.
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.
Link
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.