Comment on ‘Non-insulin-based markers of insulin resistance at diabetes diagnosis: A pooled analysis of 14 national health surveys’

Abstract

This commentary provides methodological reflections on a recent multi-country study investigating insulin resistance (IR) marker heterogeneity in adults newly diagnosed with diabetes across 14 low and middle-income countries (LMICs). While commending the significant contribution of this research, we highlight three key considerations to refine the interpretation of findings and guide future studies. First, we discuss the need for population-specific validation of non-insulin-based IR markers, as their performance varies substantially across ethnic groups. Second, we examine the implications of relying on a single fasting glucose measurement for diabetes diagnosis, which may impact phenotypic characterization and subtype differentiation. Finally, we explore the importance of quantifying the relative contributions of multi-level factors—including adiposity, lifestyle, and healthcare system variables—to better understand the observed cross-country heterogeneity. Addressing these methodological aspects in future research will strengthen the evidence base for developing tailored diabetes care strategies in diverse global populations.