Not for diabectic reasons, but about 10+ years ago, I started doing the 'no refined flour; no refined sugar' eating plan. This was originally touted by Dr. Peter Gott (now deceased) in his newspaper column. Many of the people who wrote in after following this plan said their numbers were significantly improved and some were even able to eliminate their diabetes medications.
The reason I chose this was because I am an extremely picky eater but wanted to lose weight. Being very strict with it, I managed to lose about 65 lbs in just over a year. I have been far less strict the last couple of years so have gained some of that (about 20 lbs) back so come Jan. 1 - that's my only resolution.
You can search Dr. Gott and his 'no flour; no sugar diet'. He did publish a couple of cookbooks along with this particular plan as well. See if it's something you might be interested in trying. Good luck!