Abstract
Purpose
We performed a meta-analysis of randomized controlled trials (RCTs) in order to evaluate the effect of oral magnesium supplementation on lipid profile of both diabetic and non-diabetic individuals.
Methods
PubMed-Medline, SCOPUS, Web of Science, and Google Scholar databases were searched (from inception to February 23, 2016) to identify RCTs evaluating the effect of magnesium on lipid concentrations. A random-effects model and generic inverse variance method were used for quantitative data synthesis. Sensitivity analysis was conducted using the leave-one-out method. A weighted random-effects meta-regression was performed to evaluate the impact of potential confounders on lipid concentrations.
Results
Magnesium treatment was not found to significantly affect plasma concentrations of any of the lipid indices including total cholesterol (WMD 0.03 mmol/L, 95% CI −0.11, 0.16, p = 0.671), LDL-C (WMD −0.01 mmol/L, 95% CI −0.13, 0.11, p = 0.903), HDL-C (WMD 0.03 mmol/L, 95% CI −0.003, 0.06, p = 0.076), and triglycerides concentrations (WMD −0.10 mmol/L, 95% CI −0.25, 0.04, p = 0.149). In a subgroup analysis comparing studies with and without diabetes, no difference was observed between subgroups in terms of changes in plasma total cholesterol (p = 0.924), LDL-C (p = 0.161), HDL-C (p = 0.822), and triglyceride (p = 0.162) concentrations.
Conclusions
Results of the present meta-analysis indicated that magnesium supplementation showed no significant effects on the lipid profile of either diabetic or non-diabetic individuals.
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Contributions of authors statement
LESM conceptualized and designed the study, drafted the initial manuscript, and approved the final manuscript as submitted. MSM designed the study, drafted the initial manuscript, critically reviewed the manuscript, and approved the final manuscript as submitted. AS carried out the statistical analyses and interpretation of data, critically reviewed the manuscript, and approved the final manuscript as submitted. MRM drafted the initial manuscript, critically reviewed the manuscript, and approved the final manuscript as submitted. FGR conceptualized and designed the study, drafted the initial manuscript, critically reviewed the manuscript, and approved the final manuscript as submitted
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Figure S1
Random-effects meta-regression plots of the association between mean changes in plasma concentrations of lipids and dose of magnesium. (TIFF 250 kb)
Figure S2
Random-effects meta-regression plots of the association between mean changes in plasma concentrations of lipids and duration of treatment with magnesium. (TIFF 247 kb)
Figure S3
Random-effects meta-regression plots of the association between mean changes in plasma concentrations of lipids and baseline lipid concentrations. (TIFF 262 kb)
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Simental-Mendía, L.E., Simental-Mendía, M., Sahebkar, A. et al. Effect of magnesium supplementation on lipid profile: a systematic review and meta-analysis of randomized controlled trials. Eur J Clin Pharmacol 73, 525–536 (2017). https://doi.org/10.1007/s00228-017-2212-8
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DOI: https://doi.org/10.1007/s00228-017-2212-8