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Adherence to the Dietary Approaches to Stop Hypertension (Dash) Dietary Pattern Reduces the Risk of Colorectal Cancer: A Systematic Review and Meta-Analysis Publisher Pubmed



Tangestani H1, 2 ; Salarimoghaddam A1, 2 ; Ghalandari H3 ; Emamat H4
Authors
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Authors Affiliations
  1. 1. Students' Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
  3. 3. Nutritionist, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  4. 4. Student Research Committee, PhD Candidate in Nutrition Sciences, Department and Faculty of Clinical Nutrition Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Source: Clinical Nutrition Published:2020


Abstract

Background & aims: Colorectal cancer (CRC) has become a major concern due to industrialization and dietary changes generated by it. Many of the components of the DASH (Dietary Approach to Stop Hypertension) diet are associated with the risk of CRC. However, the relationship between DASH dietary pattern and CRC has not been studied yet in a systematic review and meta-analysis. The present study was conducted to review the studies investigating the relationship between DASH diet and the risk of CRC. Methods: PubMed and Scopus search engines were searched to find relevant publications from inception up to September 2019. All the observational studies that addressed the association between DASH diet and CRC were included in the systematic review and meta-analysis. All the steps including data base search, screening, and data extraction were carried out by two researchers, independently. Results: Eight studies included in this systematic review and 5 studies (out of 8 studies included in the systematic review) were included in the meta-analysis. Combining 12 effects sizes from 5 studies, a significant inverse association between adherence to the DASH diet and risk of CRC was found (RR: 0.80; 95% CI: 0.74, 0.85). Based on the result of this study, individuals with greater adherence to DASH diet had 20% lower risk of CRC. Conclusion: The current study demonstrates that the risk of CRC is negatively associated with the adherence to the DASH dietary pattern. © 2020 Elsevier Ltd and European Society for Clinical Nutrition and Metabolism
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