Iranian Journal of

---

Concept of dietary patterns is new in the filed of nutritional epidemiology. However, it has not been focused to the extent that foods or nutrients have been considered. Although, identifying the association between nutrients and foods intake with chronic diseases is valuable yet, recent evidences have shown that the clinical trials that have used nutrients are not too successful to indicate the effects of that nutrient on the disease risk. On the other hand, the studies used dietary patterns have shown the significant effects on disease risk. Therefore, using dietary patterns analysis is an efficient method to identify diet-disease relations. However, it should be kept in the mind that dietary patterns are different across gender, ethnics, cultures and regions. It is, therefore, recommended that investigators in different countries need to assess their own community dietary patterns and emphasize on these patterns when trying to reduce chronic disease risk. The current study has been conducted to review the studies that have assessed the association of dietary patterns and chronic disease risk.

---

Background: Existing studies show that a poor diet has an effect on the progression of non-alcoholic fatty liver disease (NAFLD). The aim of the present study was to systematically summarize the results of studies on the relationship between dietary intakes and NAFLD. Methods: A review of Scopus, PubMed, Cochrane Library, Magiran, Medlib and SID databases and theses in the National Library of the Islamic Republic of Iran was conducted to identify epidemiological studies concerning NAFLD, food groups and dietary patterns. Cross-sectional, case-control and cohort studies with documented in English were selected for this systematic review. Duplication, topic, type of study, study population, variables examined and quality of data reporting of articles were evaluated. Results: Of 2128 articles found in the initial search, 33 were reviewed in full-text of these 6 articles were included in the systematic review. The literature review showed patients with NAFLD consumed more red meat, fats and sweets and less whole grains, fruits and vegetables. The Western dietary pattern was positively associated with the risk of NAFLD and adherence to the Mediterranean diet was negatively correlated to hepatic steatosis. Conclusion: The results of the systematic review indicate that different dietary intakes may be associated with development of NAFLD and its related factors. Due to limited research documented on this topic, further prospective studies are recommended.

---