# Zinc Supplementation: What the Evidence Says
Canonical: https://www.migaku.app/guides/zinc-supplementation-evidence-review
Category: evidence-review
Summary: Zinc Supplementation has 2 source documents in the current Migaku evidence database. The strongest available sources in this first pass are systematic revi
Last reviewed: 2026-05-01
Reviewed by: Migaku Evidence Review
# Zinc Supplementation: What the Evidence Says

## Quick Answer

Zinc Supplementation has 2 source documents in the current Migaku evidence database. The strongest available sources in this first pass are systematic review, so conclusions should be framed as evidence-aware guidance rather than medical advice.

## Key Takeaways

- This page is generated only from sources stored in the Migaku evidence knowledge base.
- Current evidence mix: 1 systematic review, 1 research article.
- Claims should be interpreted with the source type, study design, population, and publication date in mind.
- This article is educational and does not replace care from a qualified clinician.

## Evidence Map

| Source | Evidence type | Level | Date | Identifier |
| --- | --- | ---: | --- | --- |
| Zinc supplementation in liver cirrhosis: meta-analysis of its effect on biochemical and clinical outcomes | systematic review | 1 | 2026-01-13 | 10.1186/s40795-025-01239-3 |
| Zinc Supplementation Partially Reconstitutes Impaired Interferon-γ Production in the Elderly | research article | 4 | 2026-01-20 | 10.3390/ijms27021039 |

## What The Sources Report

- Therefore, abnormal zinc levels are closely associated with the occurrence and progression of liver diseases, particularly cirrhosis. [Gong Yifan (2026); evidence level 1]
- Acquired zinc deficiency is commonly caused by insufficient zinc intake, malabsorption, increased demand, or excessive loss. [Gong Yifan (2026); evidence level 1]
- Clinically, this presents as an increased propensity for infections, cancer, and autoimmune diseases and an impaired vaccination response in elderly patients. [Olah Krisztina (2026); evidence level 4]
- Markers of immunosenescence include a decline in Th1 response and reduced lymphocyte counts. [Olah Krisztina (2026); evidence level 4]

## How To Read This Evidence

Evidence level 1 generally reflects systematic reviews or meta-analyses. Level 2 includes randomized trials, guidelines, or public-health guidance. Level 3 usually reflects observational or narrative-review evidence. Level 4 is weaker or early-stage evidence. The level is a sorting aid, not a final quality grade.

## Practical Interpretation

There is at least one systematic-review style source in the current set, so it deserves more weight than single-study evidence. For zinc supplementation, the next editorial step is to add more targeted sources and separate strong findings from early or indirect evidence.

## Limits Of This First Pass

This is a small-batch MVP article. It uses the first ingested sources for this topic and should be expanded with more targeted searches, license review, and human editorial checks before being treated as a definitive review.

## References

- Gong Yifan (2026). Zinc supplementation in liver cirrhosis: meta-analysis of its effect on biochemical and clinical outcomes. DOI: 10.1186/s40795-025-01239-3. PMCID: PMC12825225. PMID: 41527112. License: https://creativecommons.org/licenses/by-nc-nd/4.0/ http://creativecommons.org/licenses/by-nc-nd/4.0/ This article is .... https://pmc.ncbi.nlm.nih.gov/articles/PMC12825225/
- Olah Krisztina (2026). Zinc Supplementation Partially Reconstitutes Impaired Interferon-γ Production in the Elderly. DOI: 10.3390/ijms27021039. PMCID: PMC12842025. PMID: 41596683. License: CC BY 4.0. https://pmc.ncbi.nlm.nih.gov/articles/PMC12842025/

## Safety Note

Health information can change, and individual risk depends on medical history, medications, pregnancy status, age, and diagnosis. Talk with a qualified clinician before changing treatment, supplement, or medication routines.