The benefits of coarse grains are mainly reflected in the higher content of B vitamins, higher content of dietary fiber and low glycemic index. 1. High content of B vitamins: most of the coarse grains of B vitamins will be higher than the content of rice, noodles and other refined grains. B vitamins are very important to maintain the metabolism of the three major nutrients, as well as the health of the skin and nervous system. 2. High fiber content: coarse grains contain more fiber than refined grains, fiber can promote intestinal peristalsis, a strong sense of satiety, while reducing cholesterol and other substances in the absorption rate and absorption rate, beneficial to the health of the cardiovascular system. 3. Low glycemic index: the vast majority of coarse grains have a lower glycemic index than rice, pasta and other refined grains, which is very beneficial to diabetic patients. There are other benefits of coarse grains, so the dietary guidelines for Chinese residents recommend a daily intake of 250 to 400 grams of grain, of which 50 to 100 grams are coarse grains.