Type 2 Diabetes Mellitus, also known as adult-onset or noninsulin-dependent diabetes, is a chronic, progressive condition. It affects the way your body metabolizes glucose (blood sugar), your body’s important source of fuel. With Type 2 Diabetes, your body either resists the effects of insulin — a hormone that regulates the movement of sugar into your cells — or doesn’t produce enough insulin to the pancreas to maintain a normal glucose level.