Tobacco smoking and the risk of aortic aneurysm in the UK Biobank
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Published version
Author(s)
Type
Journal Article
Abstract
Smoking is an established risk factor for aortic aneurysm, however, few studies have investigated the associations with different aortic aneurysm subsites. The aim of this study was to investigate whether different tobacco smoking metrics and smoking cessation was associated with aortic aneurysm and its subsites in the UK Biobank. The analysis included 495,993 participants, aged 37–73 years. Cox proportional hazards models were used to estimate multivariable-adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) for the association between smoking and aortic aneurysm. After 12.3 years of follow-up, 3,353 incident cases and 184 deaths from aortic aneurysm were identified. The HRs (95% CIs) of aortic aneurysm incidence for current and former vs. never smokers were 4.32 (3.93–4.76) and 1.70 (1.56–1.84), respectively, and for ≥ 20 vs. <10 cigarettes per day was 5.67 (4.93–6.52), and similar results were observed for pack-years and duration of smoking. At ≥ 30 years of smoking cessation vs. current smoking risk was substantially reduced (0.23, 0.20–0.27) and comparable to never smoking (0.22, 0.20–0.25). Strong positive HRs were observed for current vs. never smoking and abdominal (8.90, 7.79–10.16), thoracoabdominal (11.64, 4.20-32.25), and unspecified site (2.06, 1.61–2.65), ruptured (10.47, 6.12–17.90) and non-ruptured (4.19, 3.80–4.62) aortic aneurysms, but no association was observed for thoracic aortic aneurysm (1.13, 0.88–1.44). Smoking was strongly associated with increased risk of aortic aneurysm and most subtypes. Smoking cessation for ≥ 30 years strongly reduced risk to levels comparable of never smokers. These findings support public health policies promoting smoking prevention and cessation.
Date Issued
2025-09-01
Date Acceptance
2025-08-28
Citation
Scientific Reports, 2025, 15
ISSN
2045-2322
Publisher
Nature Portfolio
Journal / Book Title
Scientific Reports
Volume
15
Copyright Statement
© The Author(s) 2025 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
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Publication Status
Published
Article Number
32191
Date Publish Online
2025-09-01