ArticleInternational journal of endocrinology2026
Associations of Insulin Resistance Surrogate Indices With Component-Defined Metabolically Unhealthy Phenotype Among Women With Overweight or Obesity: A Cross-Sectional Analysis of CHNS and NHANES.
Article in International journal of endocrinology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Women with overweight or obesity are metabolically heterogeneous, and body mass index (BMI) alone does not fully characterise their endocrine and metabolic health. We examined associations between five insulin resistance surrogate indices and a component-defined metabolically unhealthy phenotype (MUP) to characterise insulin resistance-related metabolic variation in this population. Methods: This cross-sectional analysis used the China Health and Nutrition Survey (CHNS) 2009 for discovery and the National Health and Nutrition Examination Survey (NHANES) 2011-2018 for independent replication. Final samples comprised 1751 CHNS and 2953 NHANES participants. The indices were homeostasis model assessment of insulin resistance (HOMA-IR), triglyceride-glucose index (TyG), triglyceride-to-high-density lipoprotein cholesterol ratio (TG/HDL-C), triglyceride-glucose body mass index (TyG-BMI) and metabolic score for insulin resistance (METS-IR). MUP was defined as at least two abnormal metabolic components. Modified Poisson regression estimated prevalence ratios (PRs) per 1-standard-deviation increment and across quartiles. Fully adjusted models included 1721 CHNS and 2799 NHANES participants. Receiver operating characteristic curves and areas under the curve (AUCs) provided a descriptive, exploratory assessment of internal discrimination. Results: All five indices were positively associated with MUP in both datasets. Fully adjusted PRs per 1-standard-deviation increment ranged from 1.027 (95% confidence interval 1.011-1.043) for HOMA-IR to 1.133 (1.110-1.157) for TyG in CHNS and from 1.058 (1.024-1.094) for TG/HDL-C to 1.168 (1.144-1.192) for TyG in NHANES. Positive quartile gradients were observed for all indices ( Conclusions: Higher values of all five indices were associated with MUP among women with overweight or obesity in both datasets. These findings highlight the co-occurrence of insulin resistance-related glucose and lipid disturbances with clustered metabolic abnormalities. They support considering metabolic function alongside adiposity when characterising endocrine-metabolic heterogeneity among women with overweight or obesity.
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