For Type 2 Diabetes to occur, both insulin resistance and comparative inadequate insulin secretion must co-exist. For example, overweight individuals may have insulin resistance, but diabetes only develops in those who cannot increase insulin secretion sufficiently to compensate for their insulin resistance.
Unfortunately, this period of hyperinsulinemia prior to collapse of insulin production permits is the cause of significant tissue damage.
The problem is that the disease of hyperinsulinemia is highly inflammatory and leads to almost all of the metabolic disease of Western Society. Treating hyperinsulinemia with more insulin only accelerates the disease.
The correct treatment should be geared to reducing the insulin requirement, by reducing carbohydrate consumption.