4 Types of Diabetes Mellitus.
What is diabetes?.
Diabetes mellitus is a chronic, polygenic (genetically inherited) disease that is characterized by high blood sugar levels. When a person has diabetes, the body is also unable to appropriately respond to insulin, or may not be able to produce the hormone at all. This insulin-sensitivity or deficiency leads to an abnormal metabolism of carbohydrates in the body, resulting in high blood sugar (glucose) levels.
Because insulin plays a vital role in the absorption of glucose in the body and in its expenditure, the instability in the function of this hormone is what causes the various symptoms of diabetes.