The possible causes of diarrhea after eating mulberries are food poisoning, overeating, gastrointestinal allergic reactions, etc. The most common causes of diarrhea after eating mulberries are food poisoning, diarrhea and abdominal pain. 1. Food poisoning: mulberry is easily contaminated by bacteria after rotting, eating easy to cause food poisoning symptoms, diarrhea, abdominal pain is the most common, serious cases will appear nausea, vomiting, fever and even coma. 2. Eat too much: consume too much mulberry will cause diarrhea, mulberry contains oxalic acid, tannic acid and other organic acid components, eat more easily cause gastrointestinal tract irritation symptoms, some patients will also have diarrhea. 3. Allergic reaction: If you are allergic to mulberry, diarrhea and abdominal pain are likely to occur after eating, which is a gastrointestinal allergy. Eat mulberry after diarrhea is more serious, go to the hospital as soon as possible, under the guidance of the doctor actively use drugs for treatment.