BODYDATA
Research
Study type: Randomized controlled trialConfidence: Moderate

The effect of magnesium supplementation on primary insomnia in elderly: A double-blind placebo-controlled clinical trial

Abbasi BKimiagar MSadeghniiat KShirazi MMHedayati MRashidkhani B

Year2012
Sample sizen=46
JournalJournal of Research in Medical Sciences
AuthorsAbbasi BKimiagar MSadeghniiat KShirazi MMHedayati MRashidkhani B

Evidence is still building up

Summary

Summary

A double-blind, placebo-controlled RCT giving magnesium 500 mg/day for 8 weeks to 46 elderly adults with primary insomnia. Subjective sleep time and sleep efficiency improved significantly, early morning awakening decreased, and serum melatonin and renin rose while cortisol fell. Because participants were elderly, the results may not generalize to young athletes, and the sample size was small.

Source (read the original)

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DOI: 10.4103/1735-1995.104730

Key Findings

Key findings

  • 1

    Subjective sleep time and sleep efficiency improved significantly

  • 2

    Early morning awakening decreased significantly

  • 3

    Serum renin and melatonin increased, cortisol decreased

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Magnesium

Supports sleep quality and ease of falling asleep when correcting deficiency (confirmed in elderly)

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Last checked: 2026-06-23