Abstract
BackgroundExcessive visceral adipose tissue (VAT) is associated with a spectrum of diseases, including diabetes, cancer, and cardiovascular diseases. Remnant cholesterol (RC), denoting cholesterol within triglyceride-rich lipoproteins and their metabolic byproducts, has been identified as a key contributor to cardiovascular diseases and related mortality. However, the association between the VAT and RC remains unclear. In this study, the objective is to provide new evidence regarding the association between VAT and RC concentrations.Methods4727 individuals aged 18–59 were selected from the National Health and Nutrition Examination Survey conducted between 2011 and 2018 as study participants. This study utilized several weighted linear regression models and a restricted cubic spline (RCS) to explore the association and potential nonlinearities between VAT and RC. Subgroup analyses were performed to determine the consistency of findings.ResultsThe mean VAT value was 103.82 ± 1.42 cm2, and the median RC value was 18 mg/dl. VAT demonstrated a positive association with RC in a fully adjusted model, with a β and 95% confidence interval (CI) of 0.09 (0.08, 0.11) after adjustment for potential confounders. Analysis using RCS revealed a nonlinear association between the VAT area and RC (P < 0.001 for nonlinearity). Adjusted two-piecewise regression models demonstrated β coefficients of 0.13 (95%CI: 0.11 ~ 0.16, P < 0.001) for RC in individuals with VAT < 143 cm2, and 0.02 (95%CI: -0.01 ~ 0.06, P = 0.15) for those with VAT ≥ 143 cm2. Interactions were observed among the body mass index (BMI) subgroup; the β coefficients for RC were 0.14 (95%CI: 0.12 ~ 0.16) in those with BMI < 30 kg/m2 and 0.05 (95%CI:0.04 ~ 0.07) in those with BMI ≥ 30 kg/m2, with a P-value of < 0.001 for interaction.ConclusionsThis study identified a nonlinear association between VAT and RC in American adults. Reducing the VAT area may be beneficial in lowering RC concentration, particularly when VAT is < 143 cm2 and those with a BMI < 30 kg/m2.
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