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食物里含有人体所必需的营养成分,但每种食物的营养成分含量并不相同,一般说米面等主食中含糖类较多,稻麦等谷物的麸皮里还含有丰富的维生素B_1,蔬菜、水果里各种维生素、无机盐的含量较多,鱼肉蛋等动物性食物则含蛋白质、脂肪和维生素A多一些,大豆、蚕豆等植物性食物含蛋白质和脂肪较多。所以吃食物时要做到多样化,这样可以从食物中获取各种营养成分。如果一个人长期只吃几种食物得不到全面的营养成分,身体健康就要受到影响,尤其是生长发育中的青少年更应该多吃些含蛋白质、钙、磷和维生素比较丰富的食物。有钱不能等于营养好,主要是每天所吃的食物中营养的摄入量是否合理。
Food contains nutrients necessary for the human body, but the nutritional content of each food is not the same, in general, rice and other staple foods contain more sugars, rice and other cereal grains also rich in vitamin B_1, vegetables , Various vitamins in fruit, more inorganic salt content, fish eggs and other animal foods contain protein, fat and vitamin A more, soybeans, broad beans and other plant foods containing more protein and fat. So eat food to be diversified, so you can get a variety of nutrients from food. If a person can not get full nutrition by eating only a few kinds of food for a long time, their health will be affected. In particular, adolescents with growth and development should eat more foods rich in protein, calcium, phosphorus and vitamins. Money can not equal good nutrition, mainly the daily intake of nutrients in food intake is reasonable.