Does Zinc help mood? (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.
Zinc shows a Grade C benefit for mood: the recorded evidence, especially in adults suggests a modest effect, low certainty. Dose range 25 mg/day.
Exact question reviewed
- Population
- adults
- Intervention
- Zinc · 25 mg/day
- Comparator
- not reported
- Outcome
- mood
- Time horizon
- not reported
Bottom line. Zinc shows a Grade C benefit for mood: the recorded evidence, especially in adults suggests a modest effect, low certainty. Dose range 25 mg/day. [1 other]
- Direction
- benefit
- Magnitude
- may augment antidepressant response; deficiency-correction likely matters
- Grade
- C
- Certainty
- low
- Clinical meaning
- small but potentially useful
- Who it applies to
- adults
- Dose / form studied
- 25 mg/day
- Safety
- not assessed
- 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)
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: 25 mg/day.
Evidence
| Study | Design | Role | Cite |
|---|---|---|---|
| Zinc in depression: From development to treatment: A comparative/ dose response meta-analysis of observational studies and randomized controlled trials. | peer-reviewed | not classified | PMID:32829928 |
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_b2-zinc-mood
- 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: 25 mg/day.
How it stacks up for mood
- Zinc vs Vitamin D for mood — Vitamin D Grade C
- Zinc vs St. John's Wort for mood — St. John's Wort Grade B
- Zinc vs 5-HTP for mood — 5-HTP Grade C
- Zinc vs N-Acetylcysteine for mood — N-Acetylcysteine Grade C
- Zinc vs Saffron for mood — Saffron Grade B
- Zinc vs Folate for mood — Folate Grade —
- All interventions graded for mood →
Grade history
- C → CSource correction by Claude (b2 garbage-source correction): replaced an off-topic search-fallback source (published before the pump's topica details →
Re-review cadence: every 6 months (Grade C+) · methodology v1.
Frequently asked
How long does Zinc take to work for mood?
This record does not report a studied onset time for Zinc and mood. Do not assume a typical timeframe.
What dose was used in studies of Zinc for mood?
The recorded studied dose for Zinc and mood is 25 mg/day. This is a source detail, not a dose recommendation.
Does Zinc work for mood 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.
Zinc or the next-best alternative for mood?
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
- may augment antidepressant response; deficiency-correction likely matters
- 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 Zinc help mood? (Grade C). https://evidencebased.info/interventions/zinc/mood. Updated 2026-07-16.
BibTeX
@misc{substrate_nterventionszincmood,
author = {Substrate editorial},
title = {Does Zinc help mood?},
year = {2026},
url = {https://evidencebased.info/interventions/zinc/mood},
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.