Diabetes mellitus type 2 (formerly called diabetes mellitus type II, non-insulin-dependent diabetes (NIDDM), obesity related diabetes, or adult-onset diabetes) is a metabolic disorder that is primarily characterized by insulin resistance, relative insulin deficiency, and hyperglycemia. It is presently incurable. It is rapidly increasing in the developed world, and there is some evidence that this pattern will be followed in much of the rest of the world in coming years. The CDC has characterized the increase as an epidemic.
Unlike Type 1 diabetes, there is little tendency toward ketoacidosis in Type 2 diabetics, though it is not unknown. Complex and multifactorial metabolic changes lead to damage and function impairment of many organs, most importantly the cardiovascular system in both Types. This leads to substantially increased morbidity and mortality in both Type 1 and Type 2 patients, but the two have quite different origins and treatments despite the similarity in complications which often confuse even diabetics.