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Salt and Obesity: A Systematic Review and Meta-Analysis of Observational Studies Publisher Pubmed



Moosavian SP1, 2, 3 ; Haghighatdoost F1, 2 ; Surkan PJ4 ; Azadbakht L1, 2, 5, 6
Authors
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Authors Affiliations
  1. 1. Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
  3. 3. Students’ Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran
  4. 4. Department of International Health, John Hopkins School of Public Health, Baltimore, MD, United States
  5. 5. Diabetes Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
  6. 6. Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran

Source: International Journal of Food Sciences and Nutrition Published:2017


Abstract

Background: Existing research has investigated the association between sodium intake and obesity. We aim to conduct a systematic review and meta-analysis of reported evidence regarding the association between sodium intake and obesity. Methods: Multiple electronic databases (PubMed, Scopus, and Google Scholar) were searched for observational studies published until August 2016. A systematic literature review identified 11 cohort and 21 cross-sectional studies. Result: Among the 32 studies identified in the systematic literature search, only 18 cross-sectional reports had sufficient data to be included in the meta-analysis. Higher sodium consumption was associated with greater BMI (weighed mean difference (WMD) = 1.24 kg/m2, 95%CI: 0.80, 1.67; I2=98.4%; p <.0001), and higher sodium intake was associated with 4.75 cm (95%CI: 3.25, 6.25; 90.8%; p <.0001) greater waist circumference (WC). Conclusion: The present meta-analysis suggests that sodium consumption was associated with greater BMI and WC. © 2016 Informa UK Limited, trading as Taylor & Francis Group.
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