Once they have abandoned their traditional way of eating for Macdonalds and Coke you mean...
Yes, they are well adapted to diets of almost all animal derived food, no refined carbs, and very little of carbs from plants. Where I live the locals lived primarily off of bison for thousands of years and the western explorers that first encountered them noted how tall and vigorous they were. I suspect the rates of type 2 diabetes before western foods were introduced were negligible (although I have no reference to back that up). Now it is estimated that 80% of First Nation people here in Alberta will get type 2 diabetes during their life time. Unfortunately, any of them that want to eat healthy are told to follow a low fat, high carb diet, just like everyone is told.
