Hey I believe chromium is a supplement that helps with this...also fiber supplements help with maintaining constant blood Sugar levels. If you have been on the diet for 15 years and find no relief then I suggest you look further into heavy metal poisoning or a possible mineral imbalance if you haven't yet...I was on the diet for 6 months to no avail until I cleansed myself of the heavy metals...now candida is fleeing in bunches...but everyone is different.