The Effect of Magnesium Supplementation on Endothelial Function: A Randomised Cross-Over Pilot Study

Jennifer Byrne, Caitríona Murphy, Jennifer B. Keogh and Peter M. Clifton
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Jennifer Byrne: Clinical and Health Sciences, University of South Australia, Adelaide, SA 5001, Australia
Caitríona Murphy: Clinical and Health Sciences, University of South Australia, Adelaide, SA 5001, Australia
Jennifer B. Keogh: Clinical and Health Sciences, University of South Australia, Adelaide, SA 5001, Australia
Peter M. Clifton: Clinical and Health Sciences, University of South Australia, Adelaide, SA 5001, Australia

IJERPH, 2021, vol. 18, issue 15, 1-9

Abstract: Evidence supports an association between low magnesium (Mg) intake and coronary heart disease and between Mg intake and endothelial function. The aim of this study was to assess the effect of one week of Mg supplementation on endothelial function, assessed by flow mediated dilatation (FMD). Nineteen healthy men and women completed this cross-over pilot study in which participants were randomised to take an over-the-counter magnesium supplement for one week or to follow their usual diet. Weight, FMD and blood pressure (BP) were taken on completion of each intervention and 24 h urine collections and blood samples were taken to assess compliance. Baseline serum Mg was within normal range for all participants. Urinary Mg and urinary magnesium-creatinine ratio (Mg/Cr) significantly increased between interventions, ( p = 0.03, p = 0.005, respectively). No significant differences in FMD or BP were found between the interventions. A significant negative correlation was seen between age and FMD (r = ?0.496, p = 0.031). When adjusted for age, saturated fat was negatively associated with FMD ( p = 0.045). One week of Mg supplementation did not improve FMD in a healthy population.

Keywords: magnesium; flow mediated dilatation; endothelial function (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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