Coarse grains are flat foods, and their tissues are not easily absorbed by the human body, which makes them have the physiological functions of improving gastrointestinal microbial colonies and producing low calories, thus having the following ten physiological characteristics:

① Coarse grains are flat foods, so long-term consumption of coarse grains can avoid the occurrence of febrile diseases. Because most of human diseases belong to febrile diseases, such as colds, dysentery, hepatitis, psychosis, diabetes, cancer, nephritis, rheumatism, chronic tracheitis, boils, hypertension and so on. Therefore, eating coarse grains can avoid the occurrence of most human diseases.

② Prevention and treatment of cardiovascular and cerebrovascular diseases. The tissues of coarse grains combine with cholate to reduce enterohepatic circulation, limit the production and absorption of cholesterol, and promote its excretion, which can prevent and adjuvant treat diseases such as hypertension and atherosclerosis. For example, pectin combines with excess cholesterol to promote its excretion, make cholesterol metabolism normal and maintain the health of cardiovascular system.

③ The function of preventing and treating diabetes. Coarse grains also contain starch, but it can not cause the increase of blood sugar after eating coarse grains. The reason is that the cell wall of coarse grains is not easy to be destroyed by human body.

④ The function of treating constipation. The tissues of coarse grains all contain a lot of dietary fibres. After metabolism, dietary fibres can produce cathartic hydroxyl compounds, promote intestinal peristalsis, shorten the retention time of feces in the intestine, and make the stool unobstructed.

⑤ Weight loss. Dietary fibres of coarse grains can adjust the digestion and absorption function, prolong the retention time of food in the stomach, delay the appearance of digestible sugar in the small intestine, and affect the diffusion of nutrients to the intestinal mucosa, thus delaying the absorption of nutrients. Dietary fibres can produce satiety, avoid excessive intake of heat, fat and carbohydrate, and has the effect of preventing and treating obesity. At present, the number of obese children in China is increasing with the growth of children's age. Children's obesity reduces their physical and mental levels, and becomes a hotbed of adult diseases in the future. Therefore, families and kindergartens should provide coarse grains as staple food for obese children. For example, corn has high nutritional value and is a good satiety food, which can be eaten by obese children.

The above content is answered by natural cereal food-Tanida Dream, hoping to help everyone.