They say it's better to stay away from grains and starches and instead fill up on animal protein and fat-foods that keep blood sugar low. This theory, however, ignores the harmful effects that diets high in fat and protein have on our health. It also sidesteps the issue that all carbohydrates do not act the same way in the body. The Whole Grain Difference Both whole and refined grains are high in carbohydrates. But whole grains do offer advantages.
Whole grains contain all parts of the plant kernel, including the fiber-rich bran and the germ.
Refined grains are stripped of these nutritious components during milling. Eating refined grains can drive blood sugar up quickly, while the fiber in whole grains slows a rise in blood sugar. Diets rich in whole grains protect your health in other ways. The soluble fiber in whole grains like oats and barley may help lower blood cholesterol, and the insoluble fiber in whole wheat and bran helps keep the digestive tract healthy. Color your carbs.