Research
Magnesium Research
Plain-language summaries of the published magnesium research. Every summary links to its primary sources, and we never present popularity as evidence.
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Magnesium and Anxiety
Two systematic reviews suggest magnesium supplementation may modestly ease subjective anxiety in vulnerable groups, but the evidence is low quality and far from settled.
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Magnesium and Blood Pressure
Meta-analytic evidence on whether oral magnesium supplementation modestly lowers blood pressure in adults, including the doses studied and the limitations of the data.
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Magnesium and Blood Sugar
What meta-analyses of human studies report about magnesium intake and supplementation in relation to blood sugar, fasting plasma glucose, and type 2 diabetes risk.
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Magnesium and Constipation
An evidence-first look at magnesium oxide as an osmotic laxative for constipation, summarizing one randomized controlled trial and a narrative review.
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Magnesium and Migraine
A research overview of what randomized controlled trial meta-analyses report about oral magnesium for migraine prophylaxis and intravenous magnesium for acute attacks, including where the evidence is mixed.
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Magnesium and Muscle Cramps
An evidence-first look at whether oral magnesium supplements help with skeletal muscle cramps and nocturnal leg cramps, drawing on Cochrane and other meta-analyses that found little or no clinically meaningful benefit.
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Magnesium and Sleep
An evidence-first look at whether oral magnesium supplementation helps sleep, drawing on a meta-analysis and a systematic review focused mainly on older adults and people with insomnia.
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Signs of Magnesium Deficiency
What magnesium deficiency (hypomagnesemia) is, why a routine blood test may miss it, and which dietary patterns are commonly linked to low magnesium status, based on two narrative reviews.
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Magnesium Glycinate vs Citrate
An evidence-based look at how magnesium forms differ in absorption, comparing what human research shows about magnesium citrate versus magnesium oxide and where glycinate fits in.
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Magnesium: Essential Mineral and Enzyme Cofactor
Magnesium is an essential dietary mineral that acts as a cofactor in more than 300 enzyme systems in the body.