Intensive glycemic control and cardiovascular disease: an update
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Updated: Jun 13, 2026

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Published on: February 28, 2013
Aparna Brown1, L Raymond Reynolds, Dennis Bruemmer
1Division of Endocrinology and Molecular Medicine, University of Kentucky, Wethington Building, Room 575, 900 South Limestone Street, Lexington, KY 40536-0200, USA.
Insights
Intensive glycemic control prevents microvascular complications in diabetes. However, its effect on major cardiovascular events is debated, with some studies showing benefits and others suggesting no effect or harm.
Area of Science:
- Endocrinology
- Cardiology
- Diabetes Research
Background:
- Cardiovascular complications are the leading cause of death in diabetic patients.
- Intensive glycemic control is proven to prevent microvascular complications in type 1 and type 2 diabetes.
- The impact of intensive glucose lowering on macrovascular disease and cardiovascular events remains uncertain.
Purpose of the Study:
- To discuss the effects of intensive glycemic control on cardiovascular disease.
- To examine trial design differences that may explain disparate findings on cardiovascular outcomes.
- To highlight current recommendations on intensive glycemic control for cardiovascular disease prevention.
Main Methods:
- Review of findings from major diabetes trials, including DCCT, UKPDS, ACCORD, ADVANCE, and VADT.
- Analysis of extended follow-up data on cardiovascular events.
- Examination of trial design elements and patient populations.
Main Results:
- Extended follow-up of DCCT and UKPDS indicated intensive glycemic control reduced long-term cardiovascular events.
- ACCORD, ADVANCE, and VADT suggested intensive glycemic control to near-normoglycemia had no, or potentially detrimental, effects on cardiovascular outcomes.
- Discrepancies in findings may stem from differences in trial design, patient characteristics, and intervention durations.
Conclusions:
- The effect of intensive glycemic control on macrovascular complications and cardiovascular events is complex and debated.
- Differences in trial methodologies may explain conflicting results regarding cardiovascular outcomes.
- Current guidelines emphasize a balanced approach to glycemic control, considering individual patient risk factors for cardiovascular disease.
Abstract:
Cardiovascular complications constitute the major cause of morbidity and mortality in patients with diabetes. The Diabetes Control and Complications Trial (DCCT) and the United Kingdom Prospective Diabetes Study (UKPDS) provided consistent evidence that intensive glycemic control prevents the development and progression of microvascular complications in patients with type 1 or type 2 diabetes. However, whether intensive glucose lowering also prevents macrovascular disease and major cardiovascular events remains unclear. Extended follow-up of participants in these studies demonstrated that intensive glycemic control reduced the long-term incidence of myocardial infarction and death from cardiovascular disease. By contrast, the Action to Control Cardiovascular Risk in Diabetes (ACCORD) trial, Action in Diabetes and Vascular Disease: Preterax and Diamicron Modified Release Controlled Evaluation (ADVANCE) trial, and Veterans Affairs Diabetes Trial (VADT) results suggested that intensive glycemic control to near normoglycemia had either no, or potentially even a detrimental, effect on cardiovascular outcomes. This article discusses the effects of intensive glycemic control on cardiovascular disease, and examines key differences in the design of these trials that might have contributed to their disparate findings. Recommendations from the current joint ADA, AHA, and ACCF position statement on intensive glycemic control and prevention of cardiovascular disease are highlighted.
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