In a person's daily food intake, the heat energy generated by fat should account for 30% of the total heat energy. That is to say, the heat energy that teenagers should get every day is 10048 kilojoules for men and 9630 kilojoules for women, in which the heat generated by fat must reach 30 15 kilojoules for men and 2889 kilojoules for women, which is equivalent to eating 80 grams and 76 grams of fat every day; Protein should take 80 ~ 90g daily; The daily intake of carbohydrates should be 600 ~ 800g. Of course, you should also take a certain amount of vitamins and minerals. Students who exercise a lot should also increase the above nutrients. However, according to our investigation, some senior primary school students over-diet, deliberately eat less or no foods with high fat and cholesterol in their daily basic diet, and at the same time are unwilling to increase carbohydrates and protein accordingly (carbohydrate 1g, protein 1g), which can only produce 18kJ of calories, while fat1g. In the long run, not only the heat energy supply is insufficient, but also the intake of protein and minerals will be reduced, which will be difficult to meet the normal growth needs of the body and ultimately affect the growth and development.

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