Traditionally, a set of food exchange theory summarized by the Japanese is adopted, that is, the weight of each food is calculated according to the standard of 90 calories. For example, 200 grams of fruit and 80 grams of fish can be regarded as a food exchange, because each calorie of these foods is 90 calories.
Extended data
For diabetic patients, the daily food exchange demand can be quickly estimated according to the "calculation coefficient" provided in the table below.
Calculation formula: total daily food exchange ≈ body weight (kg) × calculation coefficient+correction constant.
Light manual workers-jobs mainly sitting, standing or walking slightly, such as office workers, salespeople selling goods, chemical experiment operations, teachers giving lectures, etc. Moderate manual labor-jobs with light activities, such as motor vehicle driving, electrician installation, metalworking, etc.
Healthy people can also be divided into moderate physical activity and mild physical activity. The calculation coefficient of the former is 0.5, and that of the latter is 0.4. If the calculation is too troublesome, Fang said that according to the recommendation of Dietary Guidelines for China Residents, the daily calorie intake of normal people should be controlled at1.800-2,500 calories, that is, 1.8-28 food exchanges, with an average of 23 food exchanges.
People's Network-Health: How much should I eat for three meals a day? Reach out and measure it.