Oh I believe that type 2 diabetes (as opposed to type 1 diabetes) is almost 99.99 % nutrition caused/nutrition controlled. I'm proof of that controlling my sugar levels strictly by diet without needing to take any meds. But I caught it early. And I would be an "obvious diabetic by choice" if I didn't control my lust for chocolate and pasta; but what about my friend Kayla, thin as a reed and and a health food addict who developped type 2 diabetes in her early 30's after giving birth to her first child? No amount of nutritional tinkering can undo whatever is wrong with her body which apparently was triggered by the pregnancy and did not reverse. I'm just saying that there are some things that go wrong with our bodies that are not amenable to correction by environmental changes as much as we might wish that were true,.