How many calories do normal people need every day? How many calories do they need at least?

1, the human body is normal and needs to consume at least 1500 calories every day. The number of calories needed by the human body every day is related to the degree of physical activity in the body. Generally speaking, a person weighing 60kg needs 1500- 1600 calories a day at rest.

2. If the activity is moderate, you need 1800-2000 calories a day. However, due to the reserve function of the human body, when the calorie intake of our food is insufficient, the human body itself will generate heat. This endogenous heat mainly comes from the decomposition of sugar and fat in the liver. The decomposition of liver sugar produces glucose, which can reach 720 calories a day. The decomposition of fat produces fatty acids and glycerol, which can be converted into glucose for use by cells, and fatty acids can be converted into ketone bodies for use by cells, including nerve tissues.

3. Therefore, when a person has a lot of subcutaneous fat, that is, obese patients, adipose tissue is an internal energy source, which can decompose the calories needed by human metabolism. Generally speaking, such people still need to consume at least 800 calories a day so as not to harm their health.