Diabetic foot and leg pain has little to do with life expectancy, diabetes can induce other fatal complications such as ketoacidosis, hyperosmolar hyperglycemia syndrome, serious cases may be life-threatening, long-term high blood glucose may also cause atherosclerosis and other phenomena, further can induce coronary heart disease, hemorrhagic stroke and other fatal diseases. Diabetes mellitus is a group of metabolic diseases characterized by chronic hyperglycemia caused by multiple etiological factors, and is a non-fatal disease. However, prolonged elevation of blood glucose leads to long-term metabolic disorders of carbohydrates as well as fats and proteins, and can cause a variety of acute and chronic complications, which are life-threatening in serious cases. Generally speaking, the earlier the disease is detected, diagnosed and treated, the less impact it will have on life expectancy. Diabetic patients with more complications will have a relatively shorter survival time. Therefore, it is important to treat the disease aggressively, control blood glucose and minimize the risk of complications. Seek medical attention if you feel unwell.