Should we pursue "high nutrition" or "balanced nutrition"? The latest edition of Dietary Guidelines for China Residents emphasizes that "balanced diet mode" is the basis for ensuring human nutrition and health to the greatest extent, that is, "balanced nutrition" in the problem. We need not only one or several nutrients, but also six nutrients and dozens of vitamins, minerals and dietary fiber. Each nutrient plays an important role, which is irreplaceable by other nutrients. This is why each nutrient has its corresponding recommended intake. If we only pursue the high intake of a few nutrients, it will directly or indirectly lead to the lack of other nutrients, and even lead to corresponding symptoms in severe cases. Give a simple example. Excessive pursuit of high-calcium food and taking extra calcium agents will affect the absorption of iron in the intestine, resulting in iron deficiency or deficiency. Some people will reduce their intake of carbohydrates while pursuing a high-protein diet, and carbohydrates are the most economical energy source for the human body. Therefore, the pursuit of "high nutrition" will also lead to "low nutrition", which is often not worth the candle. Secondly, excessive intake of some nutrients will produce certain toxic and side effects. We all know that excessive sodium intake will increase the risk of hypertension, and excessive iron intake will also lead to iron poisoning. Finally, some people may try to ensure the normal intake of other nutrients while pursuing "high nutrition". Even if this is done under careful planning, the total energy intake often exceeds the standard. We need a certain amount of energy every day. If energy intake exceeds energy consumption for a long time, it will lead to weight gain and obesity, and increase the risk of many chronic diseases. Therefore, "balanced nutrition" is the principle and practical goal that we should follow in our daily diet.