Does Magnesium help cognition? (Grade C evidence)
Explore current source-reported research for this exact question. These records are separate from the synthesis below; they do not update its grade or establish a recommendation.
For cognition, Magnesium sits at Grade C — a hint of benefit in the recorded evidence, especially in adults, low certainty, at doses not standardized.
Exact question reviewed
- Population
- adults
- Intervention
- Magnesium · not standardized
- Comparator
- not reported
- Outcome
- cognition
- Time horizon
- not reported
Bottom line. For cognition, Magnesium sits at Grade C — a hint of benefit in the recorded evidence, especially in adults, low certainty, at doses not standardized. [1 SR/meta]
- Direction
- benefit
- Magnitude
- Systematic review of magnesium and cognitive health in adults: the evidence linking magnesium status or intake to cognition is limited and inconsistent, drawn largely from observational data, and the authors call for better-designed studies with repeated magnesium biomarkers before any conclusion. No demonstrated cognitive benefit from supplementation.
- Grade
- C
- Certainty
- low
- Clinical meaning
- small but potentially useful
- Who it applies to
- adults
- Dose / form studied
- not standardized
- Safety
- minor_with_ssri
- The one limitation
- Claim-specific limitation details are not available in this public record.
Reviewed not reported · Evidence last changed · Open evidence record (version 0)
⚠ Safety in context
- minorwith SSRI: Generally fine with an SSRI; space about 2 hours apart. full interaction →
Grade C / low: hints of benefit in small trials; a well-run RCT could easily push this to B or to null.
Who it works for
Best-studied in adults. Recorded studied dose: not standardized.
Evidence
| Study | Design | Role | Cite |
|---|---|---|---|
| Magnesium and Cognitive Health in Adults: A Systematic Review and Meta-Analysis. | peer-reviewed | supports | PMID:39009081 |
Why this grade
Reasoning trace
The current record stores Grade C at low certainty and links 1 publishable source. A claim-specific domain-by-domain grading rationale is not available in this public record, so no reason for upgrading or downgrading is inferred here.
Audit and version
- Claim ID
- ec_b7-mg-cognition
- Claim version
- not reported
- Governance
- legacy, not verified
- Clinician review
- Not yet reviewed by a licensed clinician
- Last evidence search
- not reported
- Last editorial review
- not verified
Dose & form
Studied intake: not standardized.
How it stacks up for cognition
- Magnesium vs Creatine for cognition — Creatine Grade B
- Magnesium vs Caffeine for cognition — Caffeine Grade A
- Magnesium vs Lion's Mane for cognition — Lion's Mane Grade C
- Magnesium vs Ginkgo for cognition — Ginkgo Grade C
- Magnesium vs L-Theanine for cognition — L-Theanine Grade C
- Magnesium vs Iron for cognition — Iron Grade C
- All interventions graded for cognition →
Grade history
No grade changes yet. Initial grade assigned; re-reviewed on every 6 months (Grade C+). Methodology v1.
Re-review cadence: every 6 months (Grade C+) · methodology v1.
Frequently asked
How long does Magnesium take to work for cognition?
This record does not report a studied onset time for Magnesium and cognition. Do not assume a typical timeframe.
What dose was used in studies of Magnesium for cognition?
The recorded studied dose for Magnesium and cognition is not standardized. This is a source detail, not a dose recommendation.
Does Magnesium work for cognition if I'm not deficient?
The recorded studied population is adults. This field alone does not show whether deficiency or baseline status changes the effect.
Magnesium or the next-best alternative for cognition?
See the compare block above for the head-to-head with the most-cited alternative. Grade + certainty differences matter more than any single trial.
Related
What this is — and is not
- Evidence description
- Systematic review of magnesium and cognitive health in adults: the evidence linking magnesium status or intake to cognition is limited and inconsistent, drawn largely from observational data, and the authors call for better-designed studies with repeated magnesium biomarkers before any conclusion. No demonstrated cognitive benefit from supplementation.
- Substrate's interpretation
- The current reviewed record assigns Grade C at low certainty. A domain-by-domain rationale is shown only when recorded.
- Discuss with a clinician
- If you're on medication or have a condition that changes the calculus, bring the interaction & population blocks above to your pharmacist or prescriber before deciding.
- Individualized medical advice
- Not provided here or on any Substrate surface (API, agent tool, embed) — see YMYL policy.
Cite this page
Citation is encouraged. The proposed reuse license is CC-BY-4.0; status: pending-governance-ratification.
Plain-text citation
Substrate. Does Magnesium help cognition? (Grade C). https://evidencebased.info/interventions/magnesium/cognition. Updated 2026-07-16.
BibTeX
@misc{substrate_nsmagnesiumcognition,
author = {Substrate editorial},
title = {Does Magnesium help cognition?},
year = {2026},
url = {https://evidencebased.info/interventions/magnesium/cognition},
note = {Grade C, evidencebased.info}
}Found something wrong on this page? Report an error →
Current source-reported research
Membership uses admitted intervention and measured-outcome associations for this exact question. Different populations, preparations, comparators and timepoints remain separate. No pooling or update to the synthesis is asserted.