Obesity

Cardiovascular-liver-metabolic multimorbidity: preliminary insights into the associations with the triglyceride glucose index (triglyceride-glucose (TyG)), its obesity-derived indices and their effects on long-term survival

Cardiovasc DiabetolPublished Cohort study

Authors' conclusion

The TyG and its obesity-derived indices, particularly TyG-WWI and TyG-CVAI, exhibited significant incremental value for identifying CLMM, with CLMM status also conferring elevated subsequent mortality risk. Incorporating these indices into primary prevention monitoring systems for chronic diseases could facilitate the identification of individuals at high risk for CLMM and mortality.

Study context

Population
Adults in a national cohort
Participants
20,235 adults
Exposure
TyG and its obesity-derived indices for identifying cardiovascular-liver-metabolic multimorbidity (CLMM) and predicting mortality
Outcome
Association of TyG and obesity-derived indices with CLMM and discriminatory performance
Methodological detailsnational cohort, multi-stage sampling design, weighted logistic and Cox regression
  • National cohort
  • Multi-stage sampling design
  • Weighted logistic and Cox regression

Main finding

As reported in the abstract

All indices: AUROC for CLMM identification

> 0.76

TyG-WWI and TyG-CVAI: best AUROC, with largest net reclassification and integrated discrimination improvement

> 0.83

Observational data: associations, not effects.

Further findings

Mortality · long-term

CLMM status significantly amplified the mortality risk associated with TyG and its obesity-derived indices

XGBoost-SHAP analyses

TyG-CVAI and TyG-WWI were the major contributing variables for discriminating CLMM status

Exploratory mechanistic analyses

Glucose metabolism a core driver of CLMM development; inflammatory factors partially mediating

Original publication

Cardiovascular-liver-metabolic multimorbidity: preliminary insights into the associations with the triglyceride glucose index (TyG), its obesity-derived indices and their effects on long-term survival. Cardiovasc Diabetol. Published 23 June 2026. doi:10.1186/s12933-026-03271-4

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