What are the benefits to tight glycemic control in type 1 diabetes mellitus (DM)?

Updated: Jul 28, 2020
  • Author: Romesh Khardori, MD, PhD, FACP; Chief Editor: George T Griffing, MD  more...
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Answer

Benefits of tight glycemic control include not only continued reductions in the rates of microvascular complications but also significant differences in cardiovascular events and overall mortality. These benefits occurred even though subjects in the intensively treated group and those in the standard treatment group maintained similar HbA1c levels (about 8%), starting 1 year after the DCCT ended. It is postulated that a “metabolic memory” exists and that better early glycemic control sets the stage for outcomes many years in the future.

Increasing HbA1c levels correlated with increasing risk of developing heart failure in a study of 20,985 patients with type 1 DM. Thus, improved glycemic control should prevent heart failure as well. [93]


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