The factors that cause the old want to vomit are the following categories: 1, dietary factors: caused by gastrointestinal functional dyspepsia, unhealthy diet, eating spicy and stimulating, high-fat food, will stimulate the gastrointestinal tract, causing abnormal peristalsis and dysfunction of the gastrointestinal tract, causing indigestion, acid reflux, vomiting and other symptoms. The actual fact is that you can take a lot of drugs such as domperidone, stomach and diet tablets to regulate, pay attention to a light diet. 2, acute gastroenteritis: acute gastroenteritis is an acute inflammatory lesion of the mucous membrane tissue of the gastrointestinal tract, mostly caused by unhygienic diet, mistakenly eaten spoiled food, etc.