Vascular dementia: World Stroke Organization fact sheet 2026.
Level 5 - mechanism / opinion, no new human data
Narrative review and epidemiological fact sheet summarizing existing literature and model projections without systematic review methodology.
PubMed 41479247 · doi:10.1177/17474930251404243
What was done
This World Stroke Organization fact sheet synthesized epidemiological data from the 2021 Global Burden of Disease study and population-based autopsy-confirmed studies to estimate current prevalence and 2050 projections for pure vascular dementia (VaD) and mixed vascular-degenerative dementia.
What was found
Global dementia prevalence was 56.9 million in 2021 and is projected to exceed 137 million by 2050. Autopsy-informed estimates indicate pure VaD accounts for approximately 15% (8.5 million individuals in 2021) and mixed vascular/degenerative dementia accounts for 16% (9.1 million individuals). Assuming constant proportions, the combined burden of pure VaD and mixed dementia is projected to reach 42.7 million cases by 2050.
Why it matters
Cerebrovascular disease directly contributes to nearly one-third of all clinical dementia cases globally, underscoring the potential impact of vascular risk factor management on reducing overall dementia incidence.
Limits
Projections assume proportional rates of VaD subtypes remain static through 2050. Global epidemiological data for VaD remain sparse, and estimates rely on extrapolations from limited autopsy cohorts rather than systematic international surveillance.
Cited by
- supports The vast majority of people with Alzheimer's disease also have vascular pathology or changes in brain blood vessels.