There are two major types of diabetes, called type 1 and type
2. Type 1 diabetes
was also called insulin dependent diabetes mellitus
(IDDM), or juvenile onset diabetes mellitus. In type 1 diabetes, the pancreas undergoes an autoimmune attack by the body itself, and is rendered incapable of making insulin. Abnormal antibodies have been found in the majority of patients with type 1 diabetes. Antibodies are proteins in the blood that are part of the body's immune system.