Association between remnant cholesterol and metabolic dysfunction-associated steatotic liver disease in the elderly

Whether maintaining optimal remnant cholesterol (RC) levels later in life may improve metabolic dysfunction-associated steatotic liver disease (MASLD) outcomes remained ambiguous. This study aimed to investigate the relationship between RC and MASLD in the elderly Chinese population. A total of 131,868 subjects aged ≥ 65 years were included in this study. The association of RC with MASLD, and severity of MASLD was analyzed by logistic regression. In addition, stratified analysis was conducted to test the potential interaction. MASLD prevalence and RC concentration decreased with age. After adjustment for possible confounders, the odds ratio of MASLD at the highest quartile of RC compared to the lowest quartile was 1.587(95% CI: 1.524–1.652), and this effect remained in MASLD with liver fibrosis. Stratified analysis showed a more prominent effect on the MASLD in males, those aged 65–69 years, those without central obesity, those with diabetes, and normal level of total cholesterol, low-density lipoprotein cholesterol (Pfor interaction