Here is the [study] (https://www.sciencedirect.com/science/article/pii/S240545772400038X) (N=1.8 million)
Conclusions
This MR study demonstrated no significant causal relationships between red/processed meat intake and the risk of the four CVD outcomes examined. Further investigation is warranted to confirm these findings.
Coverage of this on Epoch Times
Here is an older study (N=29 682) that claimed to have found correlation between redmeat and heart diseases.
Within reason. Too much zinc and you'll develop a copper deficiency instead.
That's for people taking zinc supplements without the copper.
Animal foods naturally have both zinc and copper.
If you eat organ meats (easy way to do this is to make your own ground beef and incorporate them into it), you won't have a copper deficiency.
you mainly find this with zinc supplements, not necessarily with zinc from natural sources
You wont OD on zinc from animal protein