Around 75% of people with diabetes have type 2 diabetes mellitus. This was earlier termed non-insulin dependent diabetes mellitus (NIDDM) or maturity-onset diabetes mellitus. The number of people with type 2 diabetes is rapidly increasing. In type 2 diabetes, not enough insulin is produced or the insulin that is made by the body is insufficient to meet the needs of the body. Obesity or being overweight predisposes to type 2 diabetes.