So after a few less than positive articles about diabetes (it's a global phenomena and may lead to dementia), here comes one of the more well known solutions. Published this August in the Journal of Nutrition, the research (here) looked at groups following either a vegan diet or that recommended by the American Diabetes Association.
The dieters followed specific glycemic index and load diets and were measured in terms of their change in weight and hemoglobin A1C (blood test which tracks diabetes management).
What this research found is that following either a low glycemic index diet or a low glycemic load diet will lead to weight loss and improved blood sugar regulation (a lower hemoglobin A1C and presumably better management of one's diabetes). Although the vegan diet showed lower glycemic index levels and the ADA diet showed lower glycemic load levels, both appear to be helpful in controlling the dysglycemic patterns of diabetes.
For more information about these diets, or the difference between GI and GL please contact me.