Drinking black coffee with milk may cause diarrhea due to fast gastrointestinal motility, lactose intolerance, food allergies and other factors.
1. Gastrointestinal peristalsis: black coffee contains a lot of caffeine, if you drink too much black coffee with milk, can stimulate gastric acid secretion, promote gastrointestinal peristalsis, thus appearing diarrhea phenomenon.
2. Lactose intolerance: it is due to the reduced activity of lactase in the body, the lack of lactase or even the absence of lactase, resulting in the patient can not digest and absorb the lactose in the milk, resulting in bloating, diarrhea and other phenomena after the patient drinks black coffee with milk.
3. Food allergy: If the person is allergic to black coffee or milk, after drinking black coffee with milk, allergic symptoms can occur, such as diarrhea, nausea, vomiting, etc., and will be accompanied by sneezing, runny nose, itchy nose, shortness of breath and other manifestations.
In addition, there are other causes can be caused by drinking black coffee with milk diarrhea, it is recommended to consult a doctor in a timely manner to identify the cause of the disease, under the guidance of the doctor for targeted treatment.