Eating coarse grains does not have a special role, but can provide the body with energy as well as provide vitamins, minerals, dietary fiber and other nutrients. Roughage contains a wide variety of foods such as sorghum, oats, buckwheat, corn, sweet potatoes and so on. Coarse grains are rich in carbohydrates, which can replenish energy for the body and maintain metabolism. Most of the coarse grains are not finely processed, so they contain more vitamins and minerals than refined white rice and noodles, such as vitamin B₁, vitamin E, vitamin B₂, iron and zinc. Eating coarse grains in moderation can replenish the body with the required vitamins and minerals. In addition, coarse grains are rich in dietary fiber, which can increase satiety and promote gastrointestinal motility. However, due to the daily intake of the effective dose is limited, generally not be able to achieve the effect of treatment of constipation, if necessary, you can consult a doctor for standardized treatment. In daily life, attention should be paid to nutritional balance, on the basis of appropriate intake of coarse grains, but also with fine grains, fruits, meat, vegetables, eggs and other foods.