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The known risk factors for AAA include male sex, smoking, hypertension, and a family history of AAA in a first‐degree relative [26]. Many clinical studies confirmed that smoking is the most important modifiable risk factor for AAA [27–33]. Some authors discovered that the duration of smoking and daily cigarette number are also associated with a higher risk of AAA [28, 34]. One large systematic review of studies evaluating smoking and aortic aneurysm placed the relative risk of aortic aneurysm‐related events in current smokers between 3 and 6 [34]. Smoking contributes significantly to the prevalence of AAA and may account for 75% of all AAA, 4 cm in diameter or larger [33].

A history of hypertension and myocardial infarction or coronary artery bypass surgery was negatively associated, whereas a body mass index ≥25 kg/m² was protective [35].