The calcium content of milk is very high, about 100mg milk contains more than100 g. Skim milk is centrifuged to remove some fat, and the calcium content is basically the same as that of whole milk.

However, the absorption of calcium by human body needs the participation of vitamin D, which is a fat-soluble vitamin. The content of vitamin D in milk fat is the highest, and skim milk removes part of the fat, that is, part of vitamin D is removed at the same time, so the vitamin D content of skim milk is lower than that of whole milk, and the calcium supplement effect of whole milk will be better.