I did the ketogenic diet from mid August to mid December 2016 and managed to get out of prediabetic range. I felt good. But the diet is difficult because it severely limits carbs and there is Zero sugar.

I have been junking out for the past month. I feel awful. A clean diet is a discipline to follow but the benefits are so great it is a no brainer to just do it. I missed pasta and bread, for sure, but I felt much better. Refined carbs are not good for anyone, really.