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Dietary n-3 and n-6 fatty acid intakes and NAFLD: A cross-sectional study in the United States.

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BACKGROUND AND OBJECTIVES PUFAs play critical roles in the development of nonalcoholic fatty liver disease (NAFLD). This study examined the associations between dietary n-3 and n-6 PUFA intake and NAFLD… Click to show full abstract

BACKGROUND AND OBJECTIVES PUFAs play critical roles in the development of nonalcoholic fatty liver disease (NAFLD). This study examined the associations between dietary n-3 and n-6 PUFA intake and NAFLD risk in a US population. METHODS AND STUDY DESIGN Data from the National Health and Nutrition Examination Survey (NHANES) 2007-2014 was used in this cross-sectional study. Data on dietary n-3 and n-6 PUFAs were extracted through two 24-h dietary recall interviews, and the dietary n-3 and n-6 PUFA intakes were adjusted by weight. NAFLD was defined based on the US fatty liver index (FLI) value ≥30. Multivariable logistic regression models and restricted cubic spline models were applied to investigate the associations between dietary n-3 and n-6 PUFA intakes and NAFLD risk. RESULTS Dietary n-3 and n-6 PUFA intakes were inversely associated with NAFLD risk. The multivariable-adjusted OR (95% CI) of NAFLD for the highest versus lowest quartile of dietary n-3 and n-6 PUFA intakes was 0.24 (0.17-0.35) and 0.18 (0.13-0.26), respectively. In stratified analyses by sex and age, the negative associations between dietary n-3 and n-6 PUFA intakes and NAFLD risk were significant in men, women, and individuals younger and older than 45 years. Dose-response analyses indicated that NAFLD risk was associated with dietary n-3 and n-6 PUFA intakes in a nonlinear manner. CONCLUSIONS Dietary n-3 and n-6 PUFA intakes were inversely associated with NAFLD risk in US adults.

Keywords: dietary pufa; pufa intakes; intakes nafld; nafld risk

Journal Title: Asia Pacific journal of clinical nutrition
Year Published: 2021

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