Immunology of Diabetes - Hardcoverby Quentin Furman (Editor) Diabetes is a group of metabolic diseases caused by chronic high glucose levels in the blood. In this disease, beta cells ( cells) of the pancreas lose their ability to produce adequate insulin, or there is ineffective utilization of insulin by cells in the body. Type 1 diabetes (T1D) and type 2 diabetes (T2D) are the two prevalent types of diabetes. Type 1 diabetes is an autoimmune disorder in which the immune system