Diabetes mellitus type 2 estimated that 20% of people with diabetes in the United States do not realize that they have the disease. Diabetes mellitus type 2 is characterized by high blood glucose in the context of insulin resistance and relative insulin deficiency. This is in contrast to diabetes mellitus type 1 in which there is an absolute insulin deficiency due to destruction of islet cells in the pancreas and gestational diabetes mellitus that is a new onset of high blood sugars associated with pregnancy. Type 1 and type 2 diabetes can typically be distinguished based on the presenting circumstances. If the diagnosis is
Genetic causes of diabetes mellitus type 1 Genetic causes of diabetes mellitus type 1 At least 20 different chromosomal regions have been linked to type 1 diabetes (T1D) susceptibility in humans, using genome screening, candidate gene testing, and studies of human homologues of mouse susceptibility genes. The largest contribution to the pathogenesis of Type 1 Diabetes comes from a single locus called IDDM1, which comes from several genes located in the Major histocompatibility complex on the 6p21.3 chromosome. This is believed to be responsible for at least 40% of the disease's familial aggreagation. Additionally, nearly 30% of Type I Diabetes patients are heterozygous for several HLA-DQ2 (specifically