ArticleJournal of health, population, and nutrition2025
Dietary antioxidant capacity, flavonoid subclasses, and metabolic dysfunction-associated fatty liver disease in overweight and obese youth.
Article in Journal of health, population, and nutrition, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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6 authors.
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Abstract
backgroundMetabolic dysfunction-associated fatty liver disease (MAFLD) is a growing public health concern among children and adolescents with overweight and obesity. Diet quality, particularly antioxidant intake, may play a role in hepatic metabolic regulation. This study investigated the association between dietary total antioxidant capacity (DTAC) and MAFLD, and examined the mediating role of flavonoid subclasses.
methodsIn this cross-sectional study, 505 overweight and obese Iranian children and adolescents aged 7-18 years were recruited. DTAC was estimated using a validated 147-item food frequency questionnaire and the ferric reducing antioxidant power (FRAP) method. MAFLD was diagnosed via ultrasonographic evidence of hepatic steatosis in combination with overweight/obesity. Logistic regression and restricted cubic spline models assessed associations, and mediation analysis evaluated indirect effects of flavonoids.
resultsThe mean DTAC was 8.7 ± 3.8 overall, 8.3 ± 3.3 in the MAFLD group, and 9.0 ± 4.1 in the non-MAFLD group. In fully adjusted model, participants in the highest DTAC tertile had 62% reduced odds of MAFLD compared to the lowest tertile (OR: 0.38; 95% CI: 0.18-0.82; P-trend = 0.03). Spline analysis confirmed a non-linear inverse association. Mediation analysis revealed that flavonols and anthocyanidins significantly mediated the DTAC-MAFLD relationship, accounting for 74.4% and 38.4% of the total effect, respectively.
conclusionHigher dietary antioxidant capacity is inversely associated with MAFLD in overweight and obese youth, partly through the intake of specific flavonoid subclasses. These findings emphasize the value of antioxidant-rich diets for pediatric liver health and highlight the need for longitudinal studies or clinical trials to confirm causal relationships.
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