Milk contains a large number of quality protein, fat, calcium, vitamins A, vitamin D and so on. As a result, it is a kind of nutritious food which is welcomed by a lot of people. However, medical experts point out that, it is inappropriate for some people to drink milk, otherwise, it may bring side effects to their body.

First, for people who are after gastrointestinal surgery, they should not drink milk.
In the storage process of the milk, it is easy to produce lactic acid bacillus. After the lactic acid bacillus is fermented, they may produce gas. During the gastrointestinal surgery, the effects of the surgical operation on the abdominal organs, combined with the temporary inhibition of anesthesia, will weaken the peristalsis of the intestines. As a result, the gas accumulated in the intestinal cavity will not be easily expelled out. If drinking milk after the gastrointestinal surgery, it may aggravate flatulence, which will undoubtedly bring much worse influence on the slow intestinal peristalsis. Therefore, patients who have taken gastrointestinal surgery should keep away from the food which may produce gas, such as milk. Instead, they should be provided with liquid diets such as rice soup and lotus root starch.

Second, when the cirrhotic patients suffer from hepatic coma, they should not drink milk.
The decomposition products of proteins in milk can increase the concentration of blood ammonia in human body. When the liver function of the cirrhosis patients gets damaged, the liver will lose its function of transforming the ammonia into urea. Therefore, when the cirrhotic patients suffer from hepatic coma, if they still drink milk, it will accelerate or aggravate hepatic coma.

Third, people who suffer from acute nephritis should not drink milk.
Under the normal circumstance, when the protein is decomposed in human body, it will produce a variety of ammonia substances. Most of these substances can be excreted out by the kidney. However, for the patients who suffer from acute nephritis, the excretory function of the kidney has been greatly affected. Therefore, in their daily diets, the amount of protein intake should be strictly controlled, so as to reduce the excretion burden of the kidney, and eliminate or reduce the symptoms of the disease.

In a word, although milk has many benefits to human health, it still varies from person to person. If you do not pay attention to the above notices, and drink milk blindly, it will not only bring harms to the body, but also may cause unnecessary troubles.