Intracranial Aneurysm Prevalence Has Increased
A meta-analysis of over 300,000 participants found that unruptured intracranial aneurysm prevalence reached 3.1%.
Updated on Oct. 14, 2026 in Stroke
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A global meta-analysis published in 2026 revealed that the crude prevalence of unruptured intracranial aneurysms among the general population is 3.1%. The study analyzed data from 162 articles to assess risk factors and demographic trends.
Why it matters
Identifying these prevalence rates helps healthcare providers better understand the scope of asymptomatic intracranial aneurysms and the specific risk factors that may necessitate clinical screening.
The meta-analysis, encompassing 316,131 participants and 11,822 individuals with aneurysms, shows a prevalence of 5.5% in women and 3.0% in men. Patients with polycystic kidney disease exhibit a 12.8% prevalence rate.
The details
Researchers reviewed 162 articles representing 184 study populations by searching databases including Embase, PubMed, and Web of Science. The results confirm that risk is elevated for individuals over 55, current smokers, and those with hypertension.
Timeline
Researchers analyzed study publications spanning January 1, 2011, through December 31, 2025.
Aneurysm prevalence in healthy individuals was 2.9% between 2002 and 2015.
Prevalence in healthy individuals rose to 6.6% between 2016 and 2022.
The Big Picture
This study updates current epidemiological figures regarding intracranial vascular health, extending the established body of neurological research published in The Lancet Neurology.
Individuals with known risk factors like hypertension or a history of smoking may wish to discuss aneurysm screening options with their primary care physician. Understanding these demographic and lifestyle risks can help patients make more informed decisions about long-term neurological health.
The takeaway
The data highlights a significant need for targeted awareness among populations over 55 and those with specific health conditions like hypertension. Patients are encouraged to maintain healthy blood pressure levels as part of a proactive strategy for vascular wellness.
Further reading
For additional context, visit the Stroke section.
More information
Review the full systematic review and meta-analysis00276-0) published in the medical literature.
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