# Low Vitamin D Linked to Higher Risk of a Dangerous Belly Artery Bulge

*Vitamin D deficiency and the long-term risk of new-onset abdominal aortic aneurysm and severe aortic events: a multicenter propensity score-matched cohort study.*

- **Evidence Level**: Moderate
- **Why this grade**: Retrospective matched cohort of over 930,000 adults followed up to ten years, though records data cannot rule out confounding and the absolute risk gap was small.
- **Facts**: Duration: 10 years
- **Publication Types**: Journal Article
- **Journal**: Frontiers in nutrition
- **Sample Size**: 932,664 adults aged 50 and older, half with vitamin D deficiency
- **Authors**: Hung KC, Yu TS, Chen IW
- **Graded and published**: 2026-09-03
- **Last edited**: 2026-09-21
- **Topics**: vitamin D, cardiovascular health, aortic aneurysm
- **DOI**: https://doi.org/10.3389/fnut.2026.1900016
- **Free full text**: https://pmc.ncbi.nlm.nih.gov/articles/PMC13581915/
- **Original Source**: https://pubmed.ncbi.nlm.nih.gov/42755965/

## Summary

Adults over 50 with low vitamin D were 40% more likely to develop a bulge in the belly's main artery. Researchers compared records of about 466,000 deficient adults with an equal number of matched adults with normal levels, followed up to ten years. The condition is rare, so the actual gap was small: 0.66% versus 0.45%. The study cannot show that low vitamin D causes the problem, and no trial has tested whether fixing it helps.

## Practical Takeaway

This study suggests low vitamin D may be linked to aortic problems, not just bone health.

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_Canonical: https://longevity-germany.com/en/research/low-vitamin-d-linked-to-higher-risk-of-a-dangerous-belly-artery-bulge · Part of Longevity Cities · Updated 2026-09-21_