The chronic hyperglycemia of diabetes is associated with long-term damage, dysfunction, and failure of various organs, especially the eyes, kidneys, nerves, heart, and blood vessels.
Individuals with undiagnosed type 2 diabetes are at significantly higher risk for coronary heart disease, stroke, and peripheral vascular disease than the nondiabetic population.

They also have a greater likelihood of having dyslipidemia, hypertension, and obesity