Triglyceride glucose index versus triglyceride glucose-BMI index in non-alcoholic fatty liver disease: A correlation with steatosis and fibrosis.

Non-alcoholic fatty liver disease (NAFLD) links to insulin resistance and cardiometabolic risk, yet cost-effective markers like TyG and TyG-BMI indices for predicting steatosis and fibrosis severity remain under-evaluated in resource-limited settings. This retrospective cross-sectional study at GMC Jammu analyzed 500 NAFLD patients over 1 year, comparing TyG versus TyG-BMI diagnostic value against ultrasonographic steatosis grades and elastographic fibrosis scores using clinical/biochemical records. Both indices rose significantly with advancing steatosis and fibrosis, with TyG-BMI showing stronger correlations with hepatic severity than TyG alone, reflecting the integrated adiposity measures. TyG-BMI demonstrated enhanced predictive performance for NAFLD progression, offering a simple, non-invasive alternative to imaging in high-burden populations. This validates TyG-BMI as a superior, affordable surrogate for risk stratification and NAFLD management in resource-constrained clinical practice.