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Jahangir et al1 provided a fascinating analysis showing, among older people, a higher risk of abdominal aortic aneurysm (AAA) in those with normal body mass index (BMI), those who smoke and in men. Although AAA is relatively rare, ruptured AAA has a high mortality rate, so prevention, based on reversible risk factors, is important. The observed association of normal BMI with AAA may be an artefact of weight loss due to ill-health in older people. Men often have higher rates than women of cardiovascular disease, for reasons …
Competing interests None.
Provenance and peer review Not commissioned; internally peer reviewed.