It’s not good to have diarrhea after drinking fresh milk, it may be related to lactose intolerance, milk chilling and milk spoilage. 1. Lactose intolerance: generally due to lactose intolerance, the body’s lactase enzyme deficiency, there is no way to completely break down lactose, after taking milk, will stimulate the intestinal wall of the peristaltic increase, resulting in diarrhea symptoms. 2. Milk cold: if the milk just out of the refrigerator, this time will be cool milk to drink, cool milk will stimulate gastrointestinal peristalsis accelerated, the majority of patients will have diarrhea. 3. Milk spoilage: such as high-temperature environment, stored milk past the shelf life, taking spoiled milk is prone to acute gastroenteritis, which leads to abdominal pain and diarrhea and other symptoms. Don’t think it’s a good thing that you don’t have to pay attention to it after drinking fresh milk. Prolonged diarrhea can cause dehydration, and it is recommended that you seek medical attention in time to actively take appropriate treatment.