Type 2 diabetes has a strong genetic link. It is likely that the diabetes precursor, insulin resistance, leads to weight gain rather than the other way around. There is much more that is unknown about diabetes than is known.
See the articles at www.junkfoodscience.blogspot.com
Dr. Atkins discovered back in the 1980s that the way to cure/prevent diabetes was to drastically reduce the amount of carbohydrate in the diet. We have only been consuming quantities of carbs for less than 10,000 years, and except for the rich, refined carbs for less than 150 years. So, Google your Atkins diets, there are 4—the initial severely limited carbs (20 gms or less, Induction Phase) which changes your metabolism from burning sugar (glucose), to burning fat (ketones), and thus causing the weight to come off easily without much hunger after the first 48 hours of change. Then the other 3 show you how to gradually increase your healthy carbs until you reach a stable point where you are happy with your weight level.
Just read an additional disturbing piece of information. It appears that modern hybrid wheat may have a different constituents and metabolic effect that promotes weight gain. This may be why gluten free diets help som people. I wonder if this is the same for hybrid rice and corn? So, if you want to eat carbs at all, what to eat? Perhaps millet, quinoa, teff, amaranth, kanef (ancient wheat, hopefully not yet hybridized), and perhaps some others. Also heirloom potatoes. Shop in ethnic markets and look for their favorite homeland foods.
Of course, you can pretty much eliminate carbs by eating vegetables, meat, seeds, nuts, cheese, and eggs. Plus a small amount of fruit if not on very low carbs.
changing diet is the cure. plus some herbs that support and rebuild the liver, kidneys, and pancreas.
I got my blood, weight and health back in order eating a Nutritarian diet. Also see “Alton Brown Diet” in your nearest browser.
If you struggle with regularity on a low-carb diet, check out the above two approaches.
The common thing absent from these diets is highly processed foods. In particular, processed grains and sugars. When you cook, your ingredients should not have ingredients!