Contemporary Type 2 Diabetes Guidelines: Converging Evidence, Diverging Strategies, and the Position of the Korean Diabetes Association Framework
Abstract
The pharmacological management of type 2 diabetes mellitus has changed markedly over the past decade, largely in response to evidence generated by cardiovascular and renal outcome trials. Although contemporary guidelines are informed by a broadly shared evidence base, they differ in how they organize treatment concepts and translate evidence into clinical algorithms. This review compares major diabetes guidelines from the American Diabetes Association (ADA), the National Institute for Health and Care Excellence (NICE), the Japan Diabetes Society (JDS), and the Korean Diabetes Association (KDA), with particular attention to pharmacological algorithms, comorbidity-driven treatment strategies, and the conceptual principles underlying each framework. The ADA guideline uses a person-centered, risk-based approach that prioritizes sodium-glucose cotransporter 2 inhibitors and glucagon-like peptide 1 receptor agonists for patients with cardiorenal disease. The NICE guideline applies a more structured strategy, recommending early dual or triple therapy within a cost-effectiveness framework. The JDS guideline emphasizes pathophysiology-based treatment selection tailored to East Asian populations. The KDA guideline retains a glycemia-centered treatment structure while incorporating comorbidity-based decision-making and allowing early, flexible combination therapy. Thus, despite substantial convergence in the evidence base, these guidelines differ in how cardiovascular risk, glycemic…
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