Association Between Triglyceride Glucose Index and Chronic Kidney Disease in Normal‐Weight Chinese Adults With Hypertension

This study aimed to examine the association between the triglyceride-glucose (TyG) index and chronic kidney disease (CKD) in normotensive adults with hypertension and further investigate potential effect modifiers of this association. A total of 7975 normoweight hypertensive participants were enrolled from the Chinese H-type hypertension registry (CHHRS) cohort. The TyG index was calculated using the formula: ln (fasting triglyceride [mg/dL] × fasting plasma glucose [mg/dL])/2. CKD was defined as an estimated glomerular filtration rate (eGFR) < 60 mL/min/1.73 m² of body surface area. Multivariate logistic regression analysis revealed a 50% increased risk of CKD (OR: 1.50, 95% CI: 1.26-1.79) for each unit increase in the TyG index. A linear dose-response relationship between the TyG index and CKD risk was observed using restricted cubic spline analysis. Compared to the first quartile of the TyG index, the fourth quartile showed a significantly higher risk of CKD (OR: 1.88; 95% CI: 1.41-2.50). Subgroup analysis identified a stronger association between the TyG index and CKD risk in males and individuals with a history of alcohol consumption (all p values for interaction < 0.05). In conclusions, the TyG index was significantly associated with an increased risk of CKD in normoweight adults with hypertension, particularly in males and those with a history of alcohol consumption.