T2D is actually a form of accelerated aging. Diabetic patients develop the diseases of aging (cardiovascular disease, cataracts, osteoporosis, Alzheimer’s disease etc.) at a much earlier age than most of us.
T2D is not only a blood sugar issue. If you simply define diabetes by blood sugar levels going high, which is how it’s done today by most doctors, then getting fat becomes a healthy event because it prevents our blood sugar from going too high. As long as you can make fat out of the sugar, it keeps the sugar levels low and keeps you from becoming a diabetic.
A crucial point is that individuals have different levels of tolerance of fat within liver and pancreas. Only when a person has more fat than they can cope with does type 2 diabetes develop. In other words, once a person crosses their personal fat threshold, type 2 diabetes develops. Once they successfully lose weight and go below their personal fat threshold, diabetes will disappear.
Some people can tolerate a BMI of 40 or more without getting diabetes. Others cannot tolerate a BMI of 22 without diabetes appearing, as their bodies are set to function normally at a BMI of, say 19. This is especially so in people of South Asian ethnicity.
When fat cells get resistant to insulin, they can no longer make more fat out of the sugar, then blood sugars do start to go up, and that’s when someone is diagnosed as a diabetic. But in reality, the actual diagnosis of diabetes is preceded by decades when muscle cells and liver cells get insulin resistant prior to when fat cells get resistant to insulin.