# Walnut Sleep Quality Randomized Trial: What the Evidence Says
Canonical: https://www.migaku.app/guides/walnut-sleep-quality-randomized-trial-evidence-review
Category: evidence-review
Summary: Walnut Sleep Quality Randomized Trial has 2 source documents in the current Migaku evidence database. The strongest available sources in this first pass are r
Last reviewed: 2026-08-06
Reviewed by: Migaku Evidence Review
# Walnut Sleep Quality Randomized Trial: What the Evidence Says

## Quick Answer

Walnut Sleep Quality Randomized Trial has 2 source documents in the current Migaku evidence database. The strongest available sources in this first pass are randomized trial, 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 randomized trial, 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 |
| --- | --- | ---: | --- | --- |
| Effects of Walnuts on Postprandial Cognitive Function in Adults With Subjective Cognitive Impairment: Protocol for a Randomized Crossover Trial | randomized trial | 2 | 2025-01-01 | 10.2196/82032 |
| The Role of Peanuts and Tree Nuts in Improving Diet and Sleep Quality: A Pilot Study and Literature Review | preclinical study | 4 | 2026-02-10 | 10.3390/nu18040579 |

## What The Sources Report

- Affecting 1 in 9 Americans aged older than 45 years, SCI is associated with mental distress and poses a risk for dementia. [Sarvestan Javad (2025); evidence level 2]
- Even though the polygenic risk score did not differ between those with subjective cognitive decline and those without it, the former had more than double the risk of developing dementia (hazard ratio 2.14, 1.44-3.18). [Sarvestan Javad (2025); evidence level 2]
- The Global Burden of Disease Study includes data from almost 200 countries and cites low nut and seed consumption among the leading risk factors for chronic disease. [Tindall Alyssa (2026); evidence level 4]
- Nut consumption as part of a healthy dietary pattern could reduce the risk of chronic disease on a global scale. [Tindall Alyssa (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 trial evidence in the current set, but population and intervention details still matter. For walnut sleep quality randomized trial, 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

- Sarvestan Javad (2025). Effects of Walnuts on Postprandial Cognitive Function in Adults With Subjective Cognitive Impairment: Protocol for a Randomized Crossover Trial. DOI: 10.2196/82032. PMCID: PMC12759297. PMID: 41418290. License: CC BY 4.0. https://pmc.ncbi.nlm.nih.gov/articles/PMC12759297/
- Tindall Alyssa (2026). The Role of Peanuts and Tree Nuts in Improving Diet and Sleep Quality: A Pilot Study and Literature Review. DOI: 10.3390/nu18040579. PMCID: PMC12942696. PMID: 41754096. License: CC BY 4.0. https://pmc.ncbi.nlm.nih.gov/articles/PMC12942696/

## 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.