85
Red meat consumption associated with increased type 2 diabetes risk
(www.hsph.harvard.edu)
Subscribe to see new publications and popular science coverage of current research on your homepage
Per-capita beef consumption has fallen by ~40% since 1976 (source) and rates of diabetes have nearly tripled since then (source).
So it doesn't seem like telling people 'eat less red meat' moves the needle on diabetes rates.
This study looks at the effects more so of replacing red meat with plant-based foods, not so much the effects of replacing it with chicken which is what the per capita consumption changes so more there
There are of course a number of other factors indeed that influence diabetes, yes
Correlation is not causation my friend.