The problem with type 2 diabetes is diagnosis in the book Diabetes Epidemic@ you by Dr Joseph R Kraft available on Amazon. This Doctor now age 95 did
14,385 five hour glucose tolerance and insulin assay test conducted, shows the diagnosis of type 2 diabetes was over 75% of patients age 3 to 90. It is hyperinsulinemia with or with out raised blood glucose gives the diagnoses it may be years before a GTT will show diabetes. But the damage the inflammation coursed by insulin has started and the management for diabetics is to keep the insulin levels in the normal level by diet weight loss and fasting
See Dr Jason Fung on You tube for his management for diabetics he is kidney doctor in Canada and is reversing his diabetic patients.