# Air Quality: What the Evidence Says
Canonical: https://www.migaku.app/guides/air-quality-evidence-review
Category: evidence-review
Summary: Air Quality has 2 source documents in the current Migaku evidence database. The strongest available sources in this first pass are mixed biomedical and public
Last reviewed: 2026-05-20
Reviewed by: Migaku Evidence Review
# Air Quality: What the Evidence Says

## Quick Answer

Air Quality has 2 source documents in the current Migaku evidence database. The strongest available sources in this first pass are mixed biomedical and public-health sources, 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: 2 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 |
| --- | --- | ---: | --- | --- |
| International trade and air-quality-related mortality | research article | 4 | 2026-04-17 | 10.1038/s41467-026-71408-w |
| Lichens as Biomonitors of Air Quality and Climate | research article | 4 | 2026-02-23 | 10.1111/gcb.70768 |

## What The Sources Report

- For example, Zhang et al.found that 22% of the 3.45 million mortalities caused by PMin the year 2007 resulted from trade among the 13 global regions they studied. [Wang Shiyuan (2026); evidence level 4]
- We connect the MRIO models to an inventory of air pollutant emissionsand to a reduced-complexity model of air pollution transport, transformation, and removal. [Wang Shiyuan (2026); evidence level 4]
- Recently, lichens have also been found to be highly responsive to rising air temperatures associated with global warming, offering promise to detect biological impacts of climate change in the natural environment on these slow-growing, long-lived organisms (Aptroot and van Herk ; Sancho et al. ; Stapper and John ). [Colesie Claudia (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

For air quality, the current source set is useful for orientation, but it is not yet broad enough for strong claims. Use cautious language and keep conclusions close to the cited sources.

## 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

- Wang Shiyuan (2026). International trade and air-quality-related mortality. DOI: 10.1038/s41467-026-71408-w. PMCID: PMC13090335. PMID: 41997913. 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/PMC13090335/
- Colesie Claudia (2026). Lichens as Biomonitors of Air Quality and Climate. DOI: 10.1111/gcb.70768. PMCID: PMC12926855. PMID: 41725536. License: CC BY 4.0. https://pmc.ncbi.nlm.nih.gov/articles/PMC12926855/

## 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.