Yes, this is true. Indeed, and since vitamin A is a fat-soluble vitamin that is found in milk’s fat, the process of skimming milk results in a significant reduction in its vitamin A content.
As a result, skimmed milk loses almost all of its vitamin A content. Thus, we can understand why various milk manufacturers always fortify skimmed milk by way of adding certain vitamins to it, including vitamin A.
On the other hand, vitamin A plays an important role in maintaining a good night vision and a healthy skin and in preserving the health of hair and nails. In addition, vitamin A contributes to the regulation of the immune system.