The causes of dizziness and nausea in patients after eating, consider the following: 1. Consider that it is caused by patients eating too much, too full, too greasy, resulting in redistribution of blood volume in the body, causing more blood to rush to the gastrointestinal tract, causing insufficient blood supply to the heart and brain, resulting in symptoms of dizziness and nausea in patients. 2. The symptoms of dizziness and nausea after eating may be caused by food poisoning, pay attention to Whether the patient has eaten unhygienic food or uncooked food, resulting in food poisoning, causing dizziness, nausea, desire to vomit, and even diarrhea symptoms. 3. The patient’s symptoms of dizziness and nausea after eating may also be caused by diseases of the gastrointestinal tract itself, such as pyloric obstruction, duodenal ulcer, and cholecystitis.