For people with impaired glucose tolerance and diabetes, if you eat too much, your blood sugar is likely to rise. But in normal people, if they eat too much at once, their blood sugar will not rise too significantly. Since the normal pancreas secretes insulin normally, this hormone is mainly secreted on demand, which can be roughly matched with the amount of food eaten, and insulin secretion is relatively high in the case of eating too much, the blood glucose level will not rise significantly under normal circumstances. If abnormal glucose tolerance or insulin resistance occurs, the function of pancreas is impaired, hyperinsulinemia occurs, or even diabetes, the quantity and effect of insulin decreases and leads to abnormal glucose metabolism, overeating may cause blood glucose to rise. People with high blood sugar should adhere to a low-fat, low-sugar, low-salt diet, balanced nutrition, small meals, pay attention to regular monitoring of blood glucose, blood glucose abnormalities in a timely manner to seek medical attention.