In winter, the incidence of upper respiratory tract infection will increase obviously everywhere, especially among children, primary and secondary school students. Clinically, it is found that 8% of the ten children with colds have blocked stools. Some children often eat fried foods such as fast food, while others like mutton kebabs, chocolates, peanuts and coffee. Once these hot foods are eaten too much, they will be heated internally, burning body fluids, causing lung heat, burning body fluids into phlegm, causing intestinal heat and less water, and dry stools.

The most important thing to prevent colds is to pay attention to diet control and choose proper and moderate diet, which can reduce the side effects of "delicious food", reduce the burden on gastrointestinal tract and keep intestinal peristalsis in an active state all the time. Usually, you can eat more vegetables and fruits rich in crude fiber (such as spinach, celery, apples, kiwi fruit, etc.) and some foods with laxative effect (such as honey, walnuts, bananas, tremella, sesame seeds, etc.). In addition, outdoor activities should be appropriately increased.

Some people often attribute eating snacks to bad habits and don't give them to children at all. Some parents blindly satisfy their children's tastes and give them whatever they want, which is not conducive to their healthy growth.

In fact, it is beneficial to give children snacks scientifically. Of course, snacks are only a secondary channel for children to get nutrition, and cannot replace staple food. They should be limited in quantity and selected in variety. It is advisable to stop eating snacks after dinner and drink a glass of milk before going to bed. Pay attention to food hygiene, wash your hands before eating snacks, brush your teeth or rinse your mouth after eating.

according to the development of teeth, it is helpful for children to give food with a certain hardness in time to enhance their chewing function.

We often refer to animal food as meat food. Although meat food is rich in nutrition and tastes good, its fat content is too high, so it is often restricted. However, students should never be vegetarians like adults, because meat food plays an important role in supplying energy, promoting brain development and promoting the absorption and utilization of fat-soluble vitamins. In particular, a variety of unsaturated fatty acids only found in meat food are the "golden substances" for children's physical and intellectual development, so the fat content in students' recipes is normal compared with that of adults. At the dinner table, children should be encouraged to eat some cream, livestock meat, fish and poultry meat.

Too much sweets will reduce vision, because too much sugar intake will reduce the elasticity of sclera tissue. Under the influence of intraocular pressure, the eye wall expands, making the anterior and posterior diameter of the eyeball too long, which is easy to cause myopia. Some data show that the formation of myopia is related to the lack of organic salts such as calcium and chromium in the body. If you eat too much roasted and smoked protein kebabs, it will cause calcium deficiency in your body. In the case of calcium deficiency, the strength of sclera will decrease, and the toughness will also decrease, which will not stimulate antibiotics for a long time, thus forming early myopia.

Eat more foods rich in calcium and chromium, which are good for children's eye growth. Therefore, provide more foods rich in calcium and chromium in the diet, such as milk, sesame sauce, shrimp skin, fish eaten with bones, etc., and at the same time, eat foods rich in vitamin D, animal liver, egg yolk and more sun exposure to facilitate the absorption and consumption of calcium.

In a word, adolescence is the period of growth and development. You should arrange your daily diet reasonably, don't overeat, don't be picky about food, and you will have a balanced nutrition and a better healthy growth.