Nutraceutical refers to foods claimed to have a medicinal effect on human health. The American Diabetes Association says individuals at risk of developing diabetes can make changes in their diet and increse their level of physical activity to reduce their risk. The following mentions a few foods and supplements that are your friends in the fight against diabetes.
You've probably heard a million times the benefit of soluble fiber. It lends a big helping hand by slowing carbohydrate absorption. Easy sources of soluble fiber include: oat bran, nuts, barley, flax seed, fruits like oranges and apples, and vegetables like carrots. Another nutritional gem is coffee! Well, more specifically chlorogenic acid, the antioxidant found in coffee. It slows the release of glucose into the bloodstream after a meal. Caffeine counteracts this effect, so diabetics are better off drinking decaf. Barley malt has similar blood glucose lowering effects as metformin, without the side effects. Some say barley malt is to beer as grapes are to wine. Barley malt extract (available in powder and liquid forms) is also used medicinally as a bulking agent to promote bowel regularity.
Other honorable mentions include: magnesium, chromium piccolinate, conjugated linoleic acid, bitter melon and our beloved cinnamon. Nutraceuticals would likely have substantial diabetes-preventive efficacy, and presumably could be marketed legally as aids to good glucose tolerance and insulin sensitivity.
According to research conducted by Ohio State University, 
