Evidence map›Paper›PMID 41697399›Full record

ArticleEuropean journal of nutrition2026

Magnesium supplements, sleep quality, and nocturnal leg cramps: a combination of cross-sectional and prospective studies.

Noelle Stadie, Raphaël Heinzer, Pedro Marques-Vidal

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Article in European journal of nutrition, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Noelle StadieUniversity of Lausanne, Lausanne, Switzerland.ORCID http://orcid.org/0009-0004-3644-1729
Raphaël HeinzerCentre of Investigation and Research on Sleep (CIRS), Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland.ORCID http://orcid.org/0000-0002-3215-7788
Pedro Marques-VidalDepartment of Medicine, Internal Medicine, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Office BH10-642, Rue du Bugnon 46, 1011, Lausanne, Switzerland. Pedro-Manuel.Marques-Vidal@chuv.ch.ORCID http://orcid.org/0000-0002-4548-8500

Funding

Faculty of Biology and Medicine of Lausanne Faculty of Biology and Medicine of LausanneGlaxoSmithKline GlaxoSmithKlineLigue Pulmonaire Vaudoise Ligue Pulmonaire VaudoiseSchweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung 33CSCO-122661, 33CS30-139468, 33CS30-148401, 33CS30_177535, 3247730_204523 and 320030_207687Swiss Personalized Health Network 2018DRI01
6 · The paper itself

Abstract

purposeMany individuals turn to supplements like magnesium, believing them to offer a natural way to improve sleep quality. Yet, research on magnesium’s effects has produced inconsistent results. We assessed the relationships between magnesium supplementation and subjective/ or objective sleep parameters, including night cramps.

methodsData from three follow-ups of the population based CoLaus|PsyColaus cohort: 2009–12 (first), 2014–17 (second), and 2018–21 (third). Magnesium supplement use was self-reported, and participants were categorized either as users or non-users. Subjective sleep parameters were measured through questionnaires, and objective sleep parameters with polysomnography. The researchers computed a polygenic risk score (PRS) including five single nucleotide polymorphisms related to magnesium levels.

resultsThe number and characteristics of the participants in the first, second, and third follow-ups were 3887 (52.6% women, 57.2 ± 10.4 years, 4.5% magnesium users), 1916 (49.7% women, 60.8 ± 9.4 years, 7.9% users), and 1561 (51.2% women, 63.1 ± 8.9 years, 7.5% users), respectively. The multivariable-adjusted analyses indicated that magnesium users had a higher likelihood of experiencing night cramps or restless leg syndrome, with a trend towards poorer sleep quality. Multivariable-adjusted analyses revealed no significant differences between participants with and without cramps regarding polysomnography results or magnesium PRS. The prospective analyses demonstrated that participants taking magnesium supplements at baseline had a higher incidence of night cramps. The incidence of restless leg syndrome did not differ between users and non-users.

conclusionWe found no consistent association between magnesium supplementation and subjective or objective sleep parameters or restless leg syndrome. Magnesium supplementation did not prevent night cramps.

Indexed as

Dietary SupplementsMagnesiumSleep QualityAgedCross-Sectional StudiesFemaleFollow-Up StudiesHumansMaleMiddle AgedPolysomnographyProspective StudiesRestless Legs SyndromeSurveys and QuestionnairesMagnesiumCross-sectional studyMagnesiumNight crampsProspective studySleep

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.