Which studies? A quick search doesn’t seem to confirm that at all. From checking some of those studies, there seems to be a weak/low certainty correlation of lower meat consumption with lower cancer risks, a correlation (with geographical differences) of meat consumption with being overweight, but also other factors like smoking and low physical activity which really call into question whether other studies took that into account, and also a correlation between higher meat consumption and lower risk for depression (which I would also call into question given meat consumption’s correlation with high socioeconomic status).

All I can get from those metastudies is a big nothing burger of “maybe”'s in either direction.