If this is true then why have many many studies shown that vegans, who generally eat a relatively high-carb & low fat diet, are the only demographic with normal body mass index and also have much, much lower chances of developing type 2 diabetes?
In fact we have a lot of evidence linking high-fat diets to diabetes:
In fact we have a lot of evidence linking high-fat diets to diabetes:
https://nutritionfacts.org/2016/11/17/fat-is-the-cause-of-ty...
High fat diets also do a lot of bad things to your cardiovascular system. Proceed with caution.