Milk expired a week is not recommended to drink. Milk is rich in protein, fat, calcium and other nutrients, the nutritional value is relatively high, drinking milk can be supplemented for the body. However, after a week of milk expiration, the nutrients are lost, so it can not play the role of supplemental nutrition. Moreover, expired milk may have produced a large number of bacteria, corruption of substances, if you drink it may cause abdominal pain, diarrhea, nausea, vomiting and other adverse reactions, but harmful to human health. Daily recommended to drink the shelf life of the milk, can provide the body with a more comprehensive nutrition, beneficial to human health, did not drink the milk need to be placed in the refrigerator, and in the shelf life of the drink, so as not to deteriorate.