Fruit without negative calories. Different food ingredients have some differences in food thermal effects. Among the three major energy-supplying substances, protein has the largest food thermal effect, which is equivalent to 30% of its own energy; the food thermal effect of carbohydrates is 5%-6%, and the fat is the lowest, which is 4%-5%.

For general mixed food, the thermal effect of food accounts for about 10% of the energy contained in food, that is to say, for every 2000 kcal of food, it takes about 200 kcal of energy to digest food. Therefore, the thermal effect of food is generally around 10%, and only 30% at most, so "negative energy food" does not exist.

Extended data

Li Shuguang, a professor at Fudan University School of Public Health and a nutritionist, told Xinmin Evening News that an adult man needs to consume 2,400 kilocalories a day.

60% ~ 65% of this energy is used for the basic metabolism of human body, about 20% is used to maintain the normal study, activities and entertainment of human body, and the rest 10% is used to meet the special dynamic functions of food, such as digestion and decomposition. Therefore, the energy required to digest food cannot exceed the energy provided by the food itself.

People's Network-Can you lose weight by eating "negative energy food"? Expert: Negative energy food does not exist.

Baidu encyclopedia-negative calorie food