In general, eating too many sweets will not cause hyperglycemia. However, for patients with pancreatic islet dysfunction, due to the body’s insulin secretion disorder or the occurrence of insulin resistance, hyperinsulinemia, eating too many sweets will increase blood sugar.1. General population: eating more sweets does not cause hyperglycemia. Because under normal circumstances human insulin secretion on demand, such as the process of eating insulin began to secrete, non-stop meal, insulin will keep secreting, help the body metabolize the blood sugar into the body; 2, islet dysfunction patients: insulin can not be secreted in a timely manner or after the emergence of insulin resistance, it is easy to cause the peak of insulin secretion backward delay, resulting in the peak of blood sugar and insulin peak can not be synchronized. It is easy to develop hyperinsulinemia and hyperglycemia. Eating too many sweets can only mean that the body’s energy intake is excessive, which can easily cause obesity and thus may lead to hyperinsulinemia. Because obesity after the fat cells will proliferate hypertrophy, the metabolites of fat cells can inhibit the conduction function of muscle tissue islet cells, and then insulin resistance occurs. Eating too many sweets in itself does not cause hyperglycemia, but only when the pancreatic islets are dysfunctional will the symptoms of hyperglycemia appear.