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.
You will find this lecture interesting.
David Diamond, PhD (not MD) did a deep dive into the nutrition research literature for his own health problems.
What he discovered was shocking to the audience.
https://www.youtube.com/watch?v=3vr-c8GeT34