It is better for children to drink full fat, and it is not recommended for children to drink low-fat or skim milk. Although they greatly reduce the content of fat and cholesterol, the fat-soluble vitamins existing in milk fat are also removed. Obesity, hyperlipidemia, cardiovascular diseases and other people who require a low-fat diet can choose low-fat or skim milk.

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

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

Low-fat milk: The fat content of lowfatmilk is about half that of fresh milk, which is 1.0%~ 1.5%.

For adults, low-fat milk does not only rely on milk to supply energy, but often focuses on the high-quality protein contained in milk. Therefore, it is more desirable to have less fat in milk and become low-fat and skim milk. Recently, various low-fat and skim milk products have been put on the shelves of shopping malls and supermarkets. However, according to the sales staff of the supermarket, this kind of low-fat, skim milk has not been widely recognized by consumers. Although it has been on the market for some time, the price is similar to that of whole milk, but the sales volume is not large.

References:

Baidu encyclopedia entry milk web page link