Why does drinking pure milk cause diarrhea

Diarrhea refers to diarrhea, drinking pure milk causes diarrhea usually include lactose intolerance, allergic reactions, food poisoning, etc.

1. Lactose intolerance

Lactose is a sugar in milk, if the patient's body lacks or produces a small amount of lactase, lactose can not be completely digested and absorbed, resulting in lactose intolerance, easy to cause diarrhea.

2. Allergic reaction

If the patient is allergic to milk protein, the immune system will produce allergic reaction, stimulate the intestinal tract, accelerate intestinal motility, resulting in diarrhea.

3. Food poisoning

If the patient drinks deteriorated milk, leading to food poisoning, so that toxins stimulate the gastrointestinal tract, affecting the absorption function of the gastrointestinal tract, so that water in the feces is not absorbed, resulting in diarrhea.