SynthesisEuropean journal of epidemiology2026
Blood lipids and the risk of aortic aneurysm: results from the UK Biobank study and a systematic review and meta-analysis of cohort studies.
Synthesis in European journal of epidemiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Circulating lipids are potentially modifiable risk factors for aortic aneurysm, however, associations between levels of specific lipids and aortic aneurysm are unclear. We analysed associations between blood lipids and aortic aneurysm in the UK Biobank and summarized the available data in a systematic review and meta-analysis of published cohort studies. Up to 429,610 participants aged 38-73 years at baseline in 2006-2010 in UK Biobank were included. Multivariable Cox regression was used to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) for the associations between serum/plasma lipids (total cholesterol, low-density lipoprotein [LDL] cholesterol, high-density lipoprotein [HDL] cholesterol, triglycerides, apolipoprotein A1, apolipoprotein B, and lipoprotein(a)) and risk of aortic aneurysm. PubMed and Embase databases were searched up to November 11th, 2025, to identify relevant cohort studies. Random-effects models were used to estimate summary relative risks (RRs) and 95% CIs for the associations between blood lipid levels and aortic aneurysm risk. In UK Biobank, 2,434 aortic aneurysm cases occurred during 12.3 years of follow-up. Positive associations were observed between the highest vs. lowest quintile of total cholesterol (HR 1.22, 95% CI 1.07-1.41), LDL cholesterol (1.39, 1.21-1.60), apolipoprotein B (1.52, 1.33-1.74), non-HDL cholesterol (1.50, 1.29-1.73), triglycerides (1.23, 1.06-1.42), lipoprotein(a) (1.34, 1.17-1.54) and aortic aneurysm risk, while HDL cholesterol (0.57, 0.48-0.67) and apolipoprotein A1 (0.54, 0.46-0.63) were inversely associated. Eighteen cohort studies were included in the meta-analysis. The summary RR (95% CI) per 1 mmol/L increase was 1.16 (1.10-1.22, I
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