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.
As I mentioned in another comment, its not about the truth - honestly we dont need these kinds of research to tell us the truth - but rather questionable research to counter other questionable research, to put in front of people who still value these kinds of research.