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The Effect of Magnesium Supplementation on Anthropometric Indices: A Systematic Review and Dose-Response Meta-Analysis of Clinical Trials Publisher Pubmed



Rafiee M1 ; Ghavami A1 ; Rashidian A2 ; Hadi A3 ; Askari G4
Authors
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Authors Affiliations
  1. 1. Student Research Committee, Department of Clinical Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Department of Industrial Engineering, Sharif University of Technology, Tehran, Iran
  3. 3. Halal Research Center of Iri, Food and Drug Administration, Tehran, Iran
  4. 4. Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran

Source: British Journal of Nutrition Published:2021


Abstract

Abstract The aim of this study was to determine the effects of Mg supplementation on anthropometric indices consisting of body weight, waist circumference (WC), BMI and body fat percentage. In this systematic review and dose-response meta-analysis, we searched PubMed, Cochrane Library, Scopus, Web of Science and Google Scholar from databases inception up to February 2020 for relevant randomised controlled trials. Quality of evidence was evaluated using the Cochrane Collaboration Tool. All the outcomes of this meta-analysis were pooled using the random effect model. Analysis of dose-response for Mg dosage was carried out using a fractional polynomial model. The systematic review and meta-analysis include twenty-eight randomised clinical trials, comprising 2013 participants. There were no significant changes in anthropometric indices after Mg supplementation in the overall analysis. However, subgroup analysis revealed that Mg supplementation decreases WC in subjects with BMI > 30 kg/m (obese) (twelve trials, n 997 participants; weighted mean difference = -2·09 cm, 95 % CI -4·12, -0·07, P = 0·040; I = 0 %). Dose-response analysis revealed a non-significant non-linear effect of supplementation dosage on anthropometric indices. The results suggest that Mg supplementation is associated with lower WC only in obese subjects. However, more high-quality studies are needed to clarify the nature of this association. ©
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