Why does blood sugar remain high in certain persons?
Insulin is a hormone that is produced by the beta cells in the pancreas (a gland which lies just behind the stomach). Since Insulin normally controls the levels of glucose in the blood, persons who have a deficiency either in the production of or in the usage of Insulin, have elevated levels of blood glucose. The sugars and starches that we eat are converted into Glucose, which is transported in the blood. For glucose to leave the blood stream and enter cells where it is burned to provide energy, Insulin is required. So without insulin, cells are deprived of glucose and energy, and the level of glucose in the blood rises.
