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.
i think, this study is not absolutely horrible, but it is not a great study
with the limited resource that they had, it's the best they could do
like, its a good enough publication for graduation, but its not a high profile paper that is going into journals like Cell or Nature