Drinking pure milk on an empty stomach can cause diarrhea because of milk allergy, lactose intolerance or gastrointestinal mucosal irritation.
1. Milk allergy: patients who are allergic to milk drink pure milk due to an allergic reaction will appear rash, itchy skin, diarrhea, abdominal pain and other symptoms.
2. Lactose intolerance: patients who lack lactase enzyme in the intestinal tract will not be able to convert the lactose contained in milk into glucose in time after drinking milk, and the lactose will gather in the intestinal lumen and lead to diarrhea.
3. Gastrointestinal mucosa stimulation: fasting, drinking milk too fast, drinking cold milk or drinking too much milk will stimulate the gastrointestinal mucosa and lead to diarrhea.
Drinking pure milk on an empty stomach after diarrhea may also be caused by other reasons, it is recommended that the patient to the gastroenterology department of the regular hospital to further clarify the cause.