Thyroid nodules may cause elevated blood sugar. Generally, simple thyroid nodules do not cause elevated blood glucose, but some patients with thyroid nodules will be accompanied by hyperthyroidism, when the body’s secretion of thyroxine increases, which may lead to the emergence of elevated blood glucose. In the state of hyperthyroidism, the body’s metabolic rate is accelerated, the absorption and utilization of glucose in the small intestine increases, and the breakdown of liver glycogen also increases significantly, these metabolic changes will lead to increased blood glucose, which can lead to abnormal glucose tolerance, or even diabetes mellitus. Thyroid nodule patients need to consult a doctor in a timely manner, actively treat the primary disease, the use of drugs need to follow the doctor’s instructions.