The five principles of food safety recommended by WHO are food diversification, low salt, low fat, low oil and low sugar.
Everyone has his own diet preference. Some people like spicy food, some people like light food, some people like onions and coriander, and some people hate carrots. The likes and dislikes of this diet are more obvious in children. Many children have difficulty in eating. They don't eat this or that when eating, and their parents are not fed enough anyway, which leads to malnutrition and stunted growth. So do adults. Besides protein, sugar and fat, we also need many vitamins, trace elements and dietary fiber for human life activities. A single diet structure will lead to excessive intake of certain substances, which will lead to poisoning, while refusing to eat certain foods will lead to the lack of certain substances, which will lead to diseases.
With the improvement of modern people's living standards, more dishes are cooked, and the more salt in the dishes, the more delicious it is. However, excessive salt intake will lead to an increase in blood pressure and affect the life of blood vessels. More oil will be more fragrant, but too much oil intake will lead to fat accumulation in blood vessels, resulting in hyperlipidemia and enhanced vascular resistance. This requires increasing the ability of the heart to pump blood to reach the previous blood supply level, which will increase the heart load and cause hypertension. Under long-term high intensity and high pressure, the fragility of blood vessels increases and the heart is overloaded, leading to cardiovascular diseases such as cerebral hemorrhage and heart failure.
Excessive sugar intake can lead to hyperglycemia, and in severe cases, diabetes. If you develop diabetes, you can't cure it. It is dangerous to take medicine and injections all your life. Therefore, with the improvement of living standards, we should pay more attention to health care and light diet.