I don’t buy it.
My dad’s side of family dad, uncle, Grandmother and even my younger brother had/have type II diabetes, all overweight, all eat lost of the wrong foods, and I know for a fact that losing weight AND KEEPING IT OFF makes big difference.
They get very destructive symptoms when their blood sugar rises which raises their weight.
The problem is they crave eating crap and then yo-yo diet and that is what kills them faster.
yo yo dieting screws up your metabolism but it does not hurt your heart like every one used to say.