DCCT: Intensive Insulin Therapy Reduces Microvascular Complications by 39–76% in Type 1 Diabetes
The Diabetes Control and Complications Trial demonstrated that intensive insulin therapy targeting near-normal blood glucose reduced the risk of developing retinopathy by 76% in primary prevention and slowed progression by 54% in secondary intervention, while also substantially reducing nephropathy and neuropathy, establishing the foundational evidence for tight glycaemic control in type 1 diabetes.
