Many people drink milk in the morning, believing that this allows all the nutrients to be fully absorbed. In fact, drinking milk on an empty stomach causes it to quickly pass from the stomach and small intestine into the large intestine. As a result, the various nutrients are expelled before they have time to be digested and absorbed. The correct way to drink milk is to eat some food first and then drink the milk.
Avoiding diet misconceptions.
Drinking Milk on an Empty Stomach