How much dementia could prevention still avert?
In Rotterdam cohorts, about one quarter to one third of dementia cases were potentially attributable to modifiable risks—and that share did not shrink over two decades.
Source
The potential for prevention of dementia across two decades: the prospective, population-based Rotterdam Study
Study at a glance
- Design
- Cohort — Rotterdam Study; population attributable risks for modifiable risks across earlier and later cohorts
- N
- N=7003 · 7,003 in original-cohort analyses; extended cohort analysed separately (n=2,953)
- Population
- Rotterdam Study participants without prevalent dementia
- Outcome
- Population attributable fraction of dementia from modifiable cardiovascular risks and education
Structured fields used in claim comparison tables when every cited study has a complete layer.
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How much dementia could prevention still avert?
These passages occur verbatim in the stored paper text. They support the points listed below; they do not verify every statement in the explanation.
About one quarter to one third of dementia potentially preventable
one quarter to one third of dementia cases could potentially be prevented through optimal prevention or treatment of cardiovascular risk factors and diseases and improvement of educational level.
What fraction of dementia was potentially preventable?
Within the population-based Rotterdam Study, we found that about one quarter to one third of dementia cases could potentially be prevented through optimal prevention or treatment of cardiovascular risk factors and diseases and improvement of educational level.
What they did
Using prospective Rotterdam Study data, investigators estimated population attributable risks for modifiable cardiovascular risks, related diseases, and education for dementia, comparing earlier and later cohorts.
What they found
Potential prevention remained roughly one quarter to one third of cases and had not declined between cohorts spanning about two decades, motivating public-health action.
The limits
What it doesn't show
PAR estimates assume risk-factor causality and eliminability; they are not a trial proving a specific prevention package.
Key terms
- Population attributable risk (PAR)
- Fraction of disease cases theoretically preventable if a risk factor were removed.
- Modifiable risk factors
- Risks that can change through prevention or treatment, such as vascular risks.
- Dementia
- Clinical syndrome of progressive cognitive decline interfering with function.
- Rotterdam Study
- Prospective population-based cohort in the Netherlands.
- Vascular risk
- Factors like hypertension, diabetes, smoking, and lipids linked to brain health.
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Estimated preventable dementia fraction was about:
Common questions
How large is prevention potential?
About one quarter to one third of dementia cases.
Did that shrink over time?
No—authors report it has not declined over two decades.
What risks are in view?
Modifiable cardiovascular risks/diseases and education.
Why still urgent?
Prevention remains a major feasible lever against dementia burden.
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