I don’t know if you notice, eat more coarse grains and cereals of the North’s physique is generally stronger and taller than the South who likes to eat white rice and flour for a long time, what is the reason for this? This has a lot to do with the long-term refined rice and white flour as the main food. Over the years, the structure of the family’s staple food has undergone a fundamental change, the consumption of rice, rich powder most increased. Many parents and children think that refined white rice, refined white flour is delicious and refreshing, high nutritional value, which is a misunderstanding. Nutritionists have made a study, refined white rice, refined white noodles in the nutrients, such as vitamins, minerals, proteins, etc. is far lower than brown rice and standard flour. To contain vitamin Bl, for example, refined white rice in the vitamin Bl content is less than brown rice 1/2; and refined white flour in the vitamin content is only standard flour 1/8. infants, young children and adolescents lack of vitamin Bl, can cause loss of appetite, indigestion, malnutrition, and other diseases, is bound to impede the growth of size. Some economically developed western countries, pay special attention to the diversity of food types. For example, Japan has stipulated that children should have no less than 30 kinds of food a day, and no less than 14 kinds of food in a meal at noon. We cannot do this now, but we should try to diversify our food as much as possible when we are in a position to do so. Therefore, everyone from a young age should regularly consume nutritious coarse grains and miscellaneous grains, potatoes can be used as a supplement to the staple food, long-term consumption of refined rice and white flour is not conducive to growth. Western countries now advocate eating whole wheat bread, but also specializing in the production of bran food, is the reason. Foreign countries have long been proposed diet to “return to nature”, eat less processed food, eat more natural, unprocessed, and even raw food, is also this reason.