Cited by 235Magnesium in Health and DiseaseBlood Pressure and Hypertension StudiesSodium Intake and Health

Effect of magnesium supplementation on blood pressure: a meta-analysis

Kass, L, Weekes, J, Carpenter, L·2012·European Journal of Clinical Nutrition

Abstract

To date, there has been inconclusive evidence regarding the effect of magnesium supplements on blood pressure (BP). This meta-analysis was conducted to assess the effect of magnesium supplementation on BP and to establish the characteristics of trials showing the largest effect size. Primary outcome measures were systolic blood pressure (SBP) and diastolic blood pressure (DBP) at the end of the follow-up period. One hundred and forty-one papers were identified, of which 22 trials with 23 sets of data (n=1173), with 3 to 24 weeks of follow-up met the inclusion criteria, with a supplemented elemental magnesium range of 120-973 mg (mean dose 410 mg). 95% confidence intervals (CI) were calculated using DerSimonian and Laird's random-effects model, with effect size calculated using Hedges G. Combining all data, an overall effect of 0.36 and 0.32 for DBP and SBP, respectively, was observed (95% CI 0.27-0.44 for DBP and 0.23-0.41 for SBP), with a greater effect being seen for the intervention in crossover trials (DBP 0.47, SBP 0.51). Effect size increased in line with increased dosage. Although not all individual trials showed significance in BP reduction, combining all trials did show a decrease in SBP of 3-4 mm Hg and DBP of 2-3 mm Hg, which further increased with crossover designed trials and intake >370 mg/day. To conclude, magnesium supplementation appears to achieve a small but clinically significant reduction in BP, an effect worthy of future prospective large randomised trials using solid methodology.

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Authors
Kass, L., Weekes, J., & Carpenter, L.
Affiliations
University of Hertfordshire (GB)
Corresponding author
Kass, L
Venue
European Journal of Clinical Nutrition
Published
2012-02-08
Volume
66
Issue
4
Pages
411-418
ISSN
  • 0954-3007 (ISSN-L)
  • 1476-5640
OpenAlex
W2040123698
Cited by
235
References
38
Citations by year
2026: 8 · 2025: 12 · 2024: 12 · 2023: 14 · 2022: 15 · 2021: 25 · 2020: 13 · 2019: 17 · 2018: 23 · 2017: 23 · 2016: 17 · 2015: 16 · 2014: 17 · 2013: 18 · 2012: 3
FWCI
2.10
Type
journal article
Language
en
Open access
closed
Locations
  • European Journal of Clinical Nutrition (publishedVersion)
  • PubMed (publishedVersion)
  • University of Hertfordshire Research Archive (University of Hertfordshire) (submittedVersion)
  • Research Portal (King's College London) (submittedVersion)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Magnesium in Health and Disease
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Blood Pressure and Hypertension Studies
  • Health Sciences › Nursing › Nutrition and Dietetics › Sodium Intake and Health
Keywords
magnesium supplementation, blood pressure, systolic blood pressure, diastolic blood pressure, hypertension, dose-response relationship, crossover trial, dietary magnesium
MeSH terms
Administration, Oral, Blood Pressure, Blood Pressure Determination, Humans, Hypertension, Magnesium, Confidence Intervals, Dietary Supplements

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