Non-insulin-dependent diabetes is the older name for type 2 diabetes mellitus, describing the form of the disease in which the body still produces insulin but responds to it poorly. Insulin resistance in muscle, liver, and fat tissue forces the pancreas to overproduce insulin until beta-cell function declines and blood glucose rises. Strongly associated with overweight, physical inactivity, and family history, it typically appears in mid to later life, though rising obesity has pushed onset into adolescence. Management centres on diet, weight loss, and exercise, with metformin usually the first drug, and insulin reserved for later stages when other therapies fail, which is why the old name became misleading and was retired. Modern terminology, type 2 diabetes, avoids implying that insulin will never be needed.