Reasonable diet and health information

"Balanced Diet Pagoda" is the approximate proportion of all kinds of food converted according to the principle of balanced diet, which is expressed in an intuitive pagoda form. "Balanced Diet Pagoda" has more food demand on the first floor, less demand on the upper floor, and the least demand on the fifth floor. The first floor is cereal, which mainly provides energy; The second layer mainly provides vitamins for vegetables and fruits; The third layer is fish, meat and eggs, the fourth layer is milk beans, and the third and fourth layers mainly provide protein and calcium; The fifth layer is lipid, which mainly provides fat.

(1) As can be seen from the picture, the most food you eat every day should be cereal on the first floor. This kind of food is rich in sugars such as starch, which is the main source of human energy, and can also provide carbohydrates, protein, dietary fiber and B vitamins. Pay special attention to the collocation of coarse and fine grains. Don't eat single polished rice and white flour for a long time.

(2) Vitamins do not participate in the formation of human cells and do not provide energy for the human body. Moreover, the human body needs few vitamins, but it plays an important role in various life activities of the human body. Scurvy is due to the lack of vitamin C in the body, and there are more vitamin C in fresh vegetables and fruits.

(3) protein is the basic substance that constitutes human cells; The growth and development of human body and the renewal of tissues are inseparable from protein; Teenagers are in a critical period of growth and development, and there is a great demand for protein. Therefore, teenagers should ensure comprehensive and reasonable nutrition, especially pay attention to the intake of protein. In diet, they should pay more attention to the intake of food on the third and fourth floors of the pagoda, which can provide rich protein.

(4) Vitamin D can promote the absorption of calcium and phosphorus and the development of bones. When people lack vitamin D, they are prone to rickets (such as chicken breasts, X-shaped or O-shaped legs, etc. ) and osteoporosis. So the answer is: (1) cereals; Sugar; (2) bad blood; (3)③; ④; (4)D。