3/5
Moderate
evidence
Micronutrient evidence brief
Magnesium
Important for normal muscle, nerve, and sleep-related physiology; supplementation is most useful when intake or status is low.
Headline Finding
Insomnia review: older-adult sleep evidence ranges from possible benefit to null; quality remains low.
Dose Context
Use food-first intake review and avoid high supplemental doses that cause gastrointestinal issues.
Important Caveat
Sleep, cramps, testosterone, and performance claims need separate evidence; this is not a blanket ergogenic rating.
Source Drawer
Linked Research
- Systematic review Mineral performance systematic review
- Meta-analysis Older-adult insomnia meta-analysis
- Review Magnesium performance review
- Review Exercise performance critique
- Review Minerals review
- Meta-analysis Muscle fitness meta-analysis
How To Read This Rating
The score reflects evidence that the supplement does its stated job. Some jobs are direct, such as strength, endurance, or recovery; others are indirect, such as sleep, mood, appetite, or health support. A real effect can still receive a cautious practical rating when dose, safety, product quality, or audience fit remain uncertain.
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