Salt and obesity: a systematic review and meta-analysis of observational studies

Seyedeh Parisa Moosavian, Fahimeh Haghighatdoost, Pamela J. Surkan, Leila Azadbakht

Research output: Contribution to journalReview article

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.

Original languageEnglish (US)
Pages (from-to)265-277
Number of pages13
JournalInternational Journal of Food Sciences and Nutrition
Volume68
Issue number3
DOIs
StatePublished - Apr 3 2017

Keywords

  • Salt
  • abdominal obesity
  • body mass index
  • obesity
  • waist circumference

ASJC Scopus subject areas

  • Food Science

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