Eating too much corn has the potential to produce indigestion, nutritional imbalance, affect blood sugar and other hazards. Each 100 grams (fresh) of edible portion of corn contains 112 calories, of which 22.8 grams of carbohydrates, 4.0 grams of protein, 1.2 grams of fat, 2.9 grams of dietary fiber, vitamin E 0.46 milligrams, 1.8 milligrams of niacin, 16 milligrams of vitamin C, and 238 milligrams of potassium. Corn skin contains more dietary fiber that is not easily digested by the human body, resulting in a large amount of corn kernels in the human body is not easy to be fully digested, so corn eaten in excess may cause indigestion. Patients if excessive consumption of corn, corn in the crude fiber may affect the body’s absorption of mineral components, and lead to a reduction in the intake of other foods, so a large amount of corn consumption may lead to malnutrition. Corn belongs to carbohydrates, and corn contains a large amount of starch and a certain amount of sugar, so for patients with disorders of glucose metabolism, consuming a large amount of corn may affect blood sugar. In addition, corn eating too much may also appear other hazards, it is recommended that patients eating corn after the occurrence of physical discomfort, should go to the hospital in time for examination, to clarify the cause, and then deal with it accordingly.