Originally Posted by TheGuardian
Actually it reads......
"It might be possible that the effect of zinc supplementation on free testosterone depends on exercise."
SO it might be, or it might not be.
Apparently you didn't want to quote that study.
Here you go.....
Which is what I have said all along. If you are low in zinc you might also be low in natural test, or vice versa. So yeah, I'm right.
Might be. Might not be.... OK, but that's not really conclusive is it?
And you are confusing the direction of correlation in the second study. It's saying that normal testosterone is associated with higher Zinc levels. Which is true. The title of the link you posted reads: "Tip 151: Take Zinc and Increase Testosterone Levels..." But that's not what the second study shows at all. The study researched how testosterone levels affected Cu and Zn levels, not how Zn and Cu levels affect testosterone. The difference and direction is important. And besides that, testing Cu and Zn levels in the hair of testosterone deficient old Koreans isn't exactly the best test base for what we're talking about here.