The calorie of a cup of whole milk is 160 calories, and that of a cup of skim milk is 88 calories. So the calorie difference between whole milk and skim milk is 72 calories. The difference is nearly half. If you want to lose weight, it is necessary to choose skim milk.

Extended data:

Skim milk removes part of the fat in normal milk, so that the fat content is below 0.5%, which is less than 1/7 of ordinary milk. Skim milk here refers to whole milk, which is relative to whole milk, and there is low-fat milk in the middle. The production of this kind of milk meets the nutritional needs of modern people to pursue "high protein and low fat".

The fat content of whole milk is 3.0%, semi-skimmed milk is about 1.5%, and the fat content of whole skimmed milk is as low as 0.5%. There is a kind of "concentrated milk" abroad, and its fat content can be as high as 4.0%.

References:

Baidu encyclopedia-skim milk