1, expired milk is easy to breed pathogenic microorganisms. If you drink expired milk again, it will cause pathogenic microorganisms to enter the body, which may cause abdominal distension and abdominal pain and other infectious diseases.

2. The nutrients in expired milk have been decomposed and consumed, so eating such milk can't supplement nutrition.

3. This kind of milk contains many pathogenic substances, especially the decomposition products of protein are more likely to cause allergic diseases, which can lead to skin itching and rash.