1, malnutrition and obesity. Malnutrition and obesity exist in primary and secondary school students at the same time, and there are many people in both groups, so this situation is called "double peak phenomenon" by experts. The causes of malnutrition among teenagers are partial eclipse, picky eaters, eating too many snacks, and pursuing excessive weight loss of models. A more serious problem than malnutrition is obesity. In the past two years, the growth rate of obese children is amazing. Obese children account for about 15% of primary and middle school students in Beijing, which is twice as much as that before 10. Therefore, it is urgent to curb adolescent obesity. Obesity affects the physical and mental development of teenagers, childhood obesity leads to adult obesity, and adult obesity leads to hypertension, coronary heart disease, diabetes and other diseases. At present, these diseases have shown a trend of younger age.
2. Myopia. 1998 The incidence of myopia among primary and secondary school students in China ranks fourth in the world. 1999 China has jumped to the second place in the world, second only to Japanese. The prevalence of myopia in cities is high and still increasing, and it is obviously rising in rural areas. Heavy schoolwork burden and too long eye use are the main causes of myopia among teenagers. Watching TV, playing video games and watching CDs for too long will be harmful to your eyes.
3. Dental caries. Although the incidence of dental caries among primary and secondary school students in China is not high, the problem that dental caries are not repaired in time is more prominent. There are also children with broken permanent teeth. After tooth decay is formed, it should be repaired in time, and so should deciduous teeth. This is because too many deciduous teeth will affect the arrangement of permanent teeth after they grow out.
4, anemia. The problem of anemia is always similar to malnutrition of children in big cities. This anemia is not caused by lack of food, but is related to lack of eating habits and nutrition knowledge.
5. Mental health problems. At present, primary and secondary school students show obvious psychological problems, such as excessive shyness, timidity, violent tendency, anxiety and depression, especially when faced with the pressure of further education, employment and puppy love. Experts predict that the psychological problems of primary and secondary school students will be on the rise in the future, and society, teachers and parents will pay full attention to this problem.