The following reasons for going to the toilet after eating: 1, gastrointestinal weakness, gastrointestinal weakness is a common manifestation of going to the toilet after eating, especially for people who are weak and have recovered from a serious illness, if they do not pay attention to diet will appear just after eating diarrhea, prone to indigestion. 2, liver disease, eat food containing a lot of fat, bringing special pressure on the stomach and intestines can also cause diarrhea, if every time after eating a particularly greasy food 3, chronic colitis, the food eaten needs to be digested and absorbed by the intestines, if you go to the toilet after eating, it may be that the gastric mucosa is stimulated by food leading to gastrocolonic reflexes, colon peristalsis will accelerate, there will be the phenomenon of going to the toilet after eating. 4, irritable bowel syndrome, the intestines in the stress response It will appear to go to the toilet after eating and do not feel uncomfortable in other parts of the body.