Volume 41, Issue 11 pp. 2635-2645
ORIGINAL ARTICLE

Ultra-processed food is associated with features of metabolic syndrome and non-alcoholic fatty liver disease

Dana Ivancovsky-Wajcman

Dana Ivancovsky-Wajcman

School of Public Health, University of Haifa, Haifa, Israel

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Naomi Fliss-Isakov

Naomi Fliss-Isakov

Department of Gastroenterology, Tel Aviv Medical Center, Tel Aviv, Israel

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Muriel Webb

Muriel Webb

Department of Gastroenterology, Tel Aviv Medical Center, Tel Aviv, Israel

Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel

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Itay Bentov

Itay Bentov

Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA, USA

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Oren Shibolet

Oren Shibolet

Department of Gastroenterology, Tel Aviv Medical Center, Tel Aviv, Israel

Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel

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Revital Kariv

Revital Kariv

Department of Gastroenterology, Tel Aviv Medical Center, Tel Aviv, Israel

Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel

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Shira Zelber-Sagi

Corresponding Author

Shira Zelber-Sagi

School of Public Health, University of Haifa, Haifa, Israel

Department of Gastroenterology, Tel Aviv Medical Center, Tel Aviv, Israel

Correspondence

Shira Zelber-Sagi, School of Public Health, Faculty of Social Welfare and Health Sciences, University of Haifa, 199 Aba Khoushy Ave., Haifa 3498838, Israel.

Email: [email protected]

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First published: 26 June 2021
Citations: 30

Funding information

Research Grants and Fellowships Fund on Food and Nutrition and their Implications on Public Health, the Israeli Ministry of Health.

Handling Editor: Salvatore Petta

Abstract

Background & aims

High consumption of ultra-processed food (UPF) is associated with mortality and chronic morbidity but has not been studied concerning to non-alcoholic fatty liver disease (NAFLD). We aimed to test the association of UPF consumption with metabolic syndrome, NAFLD and related-liver damage.

Methods

A cross-sectional study among volunteers who underwent abdominal ultrasound (AUS), anthropometrics, blood pressure measurements, and fasting blood tests including FibroMax for non-invasive assessment of NASH and significant fibrosis. A food-frequency questionnaire was used to evaluate UPF consumption using the NOVA classification.

Results

A total of 789 subjects were included in the total sample (mean age 58.83 ± 6.58 years, 52.60% men), a reliable FibroMax test was obtained from 714 subjects, 305 subjects were diagnosed with NAFLD. High consumption of UPF was associated with higher odds for metabolic syndrome (OR = 1.88, 95% CI 1.31-2.71, P = .001) and its components; hypertension, hypertriglyceridemia, and low HDL, among the entire sample (OR = 1.53, 1.07-2.19, P = .026; OR = 1.51, 1.08-2.11, P = .017; OR = 1.55, 1.05-2.29, P = .028). In addition, it was associated with higher odds for NASH and hypertension (OR = 1.89, 1.07-3.38, P = .030; OR = 2.26, 1.20-4.26, P = .012 respectively) among subjects with NAFLD. Stratification by smoking status revealed an association between high UPF consumption and significant fibrosis among ever smokers in the entire sample and among subjects with NAFLD (OR = 1.89, 95% CI 1.03-3.45, P = .039; OR = 2.85, 1.14-7.14, P = .026 respectively).

Conclusions

High UPF consumption is associated with metabolic syndrome in the general population, and among those with NAFLD it is associated with NASH marker. Ever-smoking may act synergistically with UPF to amplify the risk for fibrosis.

CONFLICT OF INTEREST

None.

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