Refined starches — white bread, white rice, white pasta, and anything made with white flour — act a lot like sugar once the body starts to digest them.
Therefore, just like sugar, refined starches interfere with glucose control and should be avoided by those with diabetes. Whole grains are a better choice because they're richer in fiber and generally cause a slower, steadier rise in blood sugar. Instead of white bread or a bagel for breakfast, opt for a toasted whole grain English Muffin (topped with a slice of reduced-fat cheese or scrambled egg for protein). At lunch and dinner, replace white carbs with healthier whole grain options such as brown or wild rice, barley, quinoa, and whole-wheat bread to minimize the impact on your blood sugar. Even high-quality, whole grain starches elevate blood glucose to some degree, so it's still important to limit portions — stick with ½ to ¾ cup cooked grains or just 1 slice of bread at meals.