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The Study

Effect of walnut consumption on markers of endothelial function in adults: A systematic review and meta‐analysis of randomized controlled trials

In simple terms

This study combines results from several experiments where people were randomly given walnuts or not to see how their blood vessels work. It found that eating walnuts might help blood vessels relax better, but doesn’t prove it for sure. Other signs of blood vessel health didn’t change much.

45%

Analysis score

45/ 100

Maximum 100 for a systematic review with meta-analysis.

Where the score came from

Reporting0
Methodology18
Publication100
Statistical77
Study type (basis of the score)
Systematic Review with Meta-Analysis
Level 1a - Systematic review of RCTs
What’s the bottom line?

This study looked at whether eating walnuts helps blood vessels stay healthy by looking at results from several experiments.

Where does this study sit?

Systematic Reviews & Meta-analyses

Max 100

Randomized Trials

Max 90

Cohort Studies

Max 72

Case-Control

Max 58

Cross-Sectional

Max 44

Case Reports & Series

Max 30

Expert Opinion

Max 5
StrongerWeaker
Systematic Reviews & Meta-analyses
Level 1a
45

45 / 100

Quality score

The highest quality evidence. These studies systematically search, appraise, and synthesize results from multiple individual studies, providing the most reliable summary of current knowledge.

Can establish causation

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Key takeaways

Summary

Based on the study abstract and findings.

  1. 1A better FMD means blood vessels can relax better, which is good for heart health.
  2. 2The other markers didn’t change, so walnuts may only help certain aspects.
  3. 3Walnuts improved one blood vessel test (FMD) by 0.94%.
  4. 4They did not change ICAM-1, VCAM-1, or SARM levels.

Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data

Publication

Journal

Phytotherapy Research

Year

2024

Authors

Chou-Yi Hsu, Abdullah Ali Alzahrani, Hatem Ghaleb Maabreh, K. Prasad, D. O. Bokov, Anaheed Hussein Kareem, A. Alawadi, Ali Ihsan, Maha Noori Shakir, Mohammed Qasim Alasheqi

Open Access
5 citations
Analysis v3
Fit Body Science verdict — we translate health studies into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.