[SketchySeaBeast]

That would imply that red meat eaters would be less likely to get cancer which doesn't seem to be the case. I'm not saying that zinc isn't a factor, but I think that saying a blanket "Zinc is needed to prevent cancer" is irresponsible. We should be so lucky that we can narrow it down to a single dietary element or be able to blame it simply upon nutrition.

[kelipso]

That’s not how statistical implication works… Learn about sufficient condition vs required condition before you start criticizing people. Taking zinc and smoking cigarettes still increases your chances of cancer, for example.

[SketchySeaBeast]

I understand that entirely. I'm saying that the way that GP is presenting their information it sounds like a "one neat trick", which of course it isn't because nothing ever is, which you and I are in agreement upon.