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Magnesium

What does the research say about Magnesium?

2 health outcomes synthesised

Magnesium has been studied for 2 health outcomes, with the strongest evidence supporting its role in reducing depression symptoms (3 studies, moderate evidence strength). Research also explores its effects on C-reactive protein levels, primarily in populations with metabolic syndrome or overweight/obesity, though the evidence is weaker and more preliminary. No consistent effective dose or form has been established across studies.

Strongest evidence: The most robust research supports magnesium for reducing depression symptoms, with moderate evidence strength. All 3 studies (including 1 meta-analysis and 1 systematic review) reported small beneficial effects. However, no consistent dose, form, or duration data were available, and the evidence base is small, with potential publication bias noted.

Mixed or weaker evidence: For reducing C-reactive protein (CRP) levels, evidence is low strength. Of 3 studies, 2 reported beneficial effects (small to moderate effect sizes) in populations with metabolic syndrome or overweight/obesity, while 1 study found no effect. The beneficial studies were systematic reviews, but one co-administered magnesium with vitamin D, making the independent effect unclear. The neutral study used a low dose (150 mg/day) of magnesium hydroxide, which may not reflect typical supplementation.

Effective dose patterns: No consistent effective dose emerged across outcomes. For CRP reduction, effects were observed at a median study duration of ~12 weeks, but specific dose ranges were not reported. For depression, dose data were largely missing. This limits dose-response conclusions.

Population insights: For CRP reduction, beneficial effects were seen in clinical populations with metabolic syndrome or overweight/obesity. No specific populations were identified for depression outcomes. No data were available on deficient vs. replete populations.

Notable caveats: The evidence base for both outcomes is small (3 studies each), making conclusions preliminary. For depression, publication bias may inflate positive findings. For CRP, one beneficial study co-administered magnesium with vitamin D, confounding the independent effect. Dose, form, and duration data were largely missing across studies, preventing dose-response analysis.

Frequently asked

  • What is Magnesium good for according to research?
    Research suggests magnesium may help reduce depression symptoms (moderate evidence from 3 studies, all showing small beneficial effects) and lower C-reactive protein levels (low evidence from 3 studies, with 2 showing benefit and 1 showing no effect). These findings are preliminary due to small evidence bases.
  • What dose of Magnesium is typically used in studies?
    No consistent effective dose has been reported across studies for either depression or CRP reduction. For CRP, one neutral study used 150 mg/day of magnesium hydroxide, but dose data were largely missing from other studies. This limits any dose-response conclusions.
  • Who benefits most from Magnesium?
    For CRP reduction, beneficial effects were observed in people with metabolic syndrome and overweight/obese populations. No specific populations were identified for depression outcomes. Research has not yet compared deficient vs. replete individuals.
  • Are there caveats or limitations in the research on Magnesium?
    Yes. The evidence base for both outcomes is small (only 3 studies each), so conclusions are preliminary. For depression, publication bias may inflate positive results. For CRP, one beneficial study co-administered magnesium with vitamin D, making the independent effect unclear. Dose, form, and duration data are largely missing across studies.
  • Does Magnesium help with depression?
    Moderate evidence from 3 studies (including 1 meta-analysis and 1 systematic review) shows small beneficial effects of magnesium on reducing depression symptoms. However, the evidence base is small, and no consistent dose or form data were reported, so conclusions should be considered preliminary.
  • Does Magnesium reduce inflammation (C-reactive protein)?
    Low evidence from 3 studies shows mixed results: 2 studies reported small-to-moderate reductions in CRP levels, while 1 study found no effect. Beneficial effects were seen in people with metabolic syndrome or overweight/obesity, typically after about 12 weeks. The evidence is preliminary and limited by small study numbers and confounding co-administration with vitamin D in one study.

Most-studied combinations with Magnesium

most supplement research is combination research
Also studied with:Potassium (4), Calcium (3), Zinc (6), Vitamin B2 (2), Vitamin B6 (2), Vitamin B9 (2), Vitamin B12 (2), Vitamin D (6), Vitamin E (2), Vitamin D3 (2)

  • Magnesium Malate

    By Source Naturals

    4.8 (11.4K reviews)
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  • Magnesium Malate

    By Source Naturals

    4.8 (5K reviews)
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    $15.75
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  • Magnesium Malate

    By Source Naturals

    4.8 (11.4K reviews)
    Out of Stock
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    $-
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    iHerb
    $16.79
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  • Magnesium Citrate

    By NOW Foods

    4.8 (12.3K reviews)
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    $23.27
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  • Magnesium Citrate

    By NOW Foods

    4.8 (46.5K reviews)
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    $22.45
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  • High Absorption Magnesium

    By Doctor's Best

    4.8 (126.6K reviews)
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