1. Energy contribution
Energy is the basic requirement to maintain the normal operation of the body. The energy required by human body depends on age, sex, height, weight, activity and other factors. Different foods provide different energy. In addition, fats, carbohydrates and protein in food also provide different energy. If you consume too much energy, you will gain weight and even affect your health. Therefore, when evaluating the nutritional value of food, we need to consider its contribution to energy.
2. protein content
Protein is one of the components of human body and an essential nutrient for maintaining normal physiological functions. When evaluating the nutritional value of food, we need to consider whether the food is rich in protein, and adjust the intake according to our own situation. For example, if you are young or do high-intensity exercise, you need more protein to stay healthy.
3. Fat content
Although fat is also a nutrient needed by the body, if you eat too much fat, it will lead to obesity, cardiovascular diseases and other problems. Therefore, when evaluating the nutritional value of food, we need to consider its fat content. For people's daily diet, high-fat foods such as frying and barbecue should be taken in moderation.
4. Carbohydrate content
Carbohydrate is one of the main energy sources of human body, but if it is ingested too much, it will lead to weight gain and other health problems. When evaluating the nutritional value of food, we should consider its carbohydrate content, especially those foods with high sugar content, such as desserts and drinks, and try to avoid excessive intake.
5. Vitamin and mineral content
Besides providing basic nutrition, food also contains many vitamins and minerals. They are very important to human health, such as vitamins A, C and E, which can help fight infection. Minerals such as calcium, iron and zinc also play a vital role in human health. Therefore, when evaluating the nutritional value of food, it is necessary to consider whether its vitamin and mineral content is appropriate.
6. Pesticide residues during food growth.
Chemical fertilizers and pesticides are often used in modern agriculture, and these pesticides will remain in food and be ingested into the human body. Therefore, when evaluating the nutritional value of food, it is also necessary to consider whether a large number of pesticides are used in the process of food growth.
In short, evaluating the nutritional value of food needs to comprehensively consider the above factors, and choose the food that suits you according to your actual needs and health status.