# Vitamin D Sleep Quality Meta-analysis: What the Evidence Says
Canonical: https://www.migaku.app/guides/vitamin-d-sleep-quality-meta-analysis-evidence-review
Category: evidence-review
Summary: Vitamin D Sleep Quality Meta-analysis has 2 source documents in the current Migaku evidence database. The strongest available sources in this first pass are m
Last reviewed: 2026-06-16
Reviewed by: Migaku Evidence Review
# Vitamin D Sleep Quality Meta-analysis: What the Evidence Says

## Quick Answer

Vitamin D Sleep Quality Meta-analysis 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: 1 narrative review, 1 preclinical study.
- 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 |
| --- | --- | ---: | --- | --- |
| Vitamin D as a Regulator of the Biological Clock—Implications for Circadian–Metabolic Dysregulation | narrative review | 3 | 2026-04-02 | 10.3390/ijms27073243 |
| Preventive strategies in neuroimmunology | preclinical study | 4 | 2026-04-29 | 10.1186/s42466-026-00490-8 |

## What The Sources Report

- Circadian misalignment has been unequivocally recognized as a risk factor for cardiometabolic diseases. [Vesković Milena (2026); evidence level 3]
- Inadequate sleep increases the risk of insulin resistance and metabolic syndrome; hence their co-appearance led to the designation of circadian syndrome. [Vesković Milena (2026); evidence level 3]
- Preventive strategies may reduce disease risk before disease onset and, after manifestation, may modify early disease trajectories and slow progression, yet they remain underused in neuroimmunology. [Riemann-Lorenz Karin (2026); evidence level 4]
- Growing evidence indicates that lifestyle and behavioral factors substantially influence immune regulation, neuroinflammation, and neuroplasticity and may therefore affect both disease susceptibility and long-term outcomes across all levels of prevention. [Riemann-Lorenz Karin (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 vitamin d sleep quality meta-analysis, 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

- Vesković Milena (2026). Vitamin D as a Regulator of the Biological Clock—Implications for Circadian–Metabolic Dysregulation. DOI: 10.3390/ijms27073243. PMCID: PMC13074111. PMID: 41977424. License: CC BY 4.0. https://pmc.ncbi.nlm.nih.gov/articles/PMC13074111/
- Riemann-Lorenz Karin (2026). Preventive strategies in neuroimmunology. DOI: 10.1186/s42466-026-00490-8. PMCID: PMC13130587. PMID: 42057221. License: CC BY 4.0. https://pmc.ncbi.nlm.nih.gov/articles/PMC13130587/

## 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.