NIH-funded study links schooling to dementia
An NIH-funded study reports that one extra year of secondary school in the UK was linked to fewer dementia diagnoses later in life, with the largest effect in people at higher genetic risk.
Key points
- An NIH news release dated 23 October 2026 describes an NIH-funded study of schooling and dementia.
- The study used a UK reform that raised the minimum school-leaving age by one year.
- It reports fewer dementia diagnoses later in life, with the largest effect among people at higher genetic risk.
- This is research news from a US agency, not UK guidance.
What was announced
A US National Institutes of Health (NIH) news release dated 23 October 2026 describes a study that found an extra year of secondary school was associated with fewer dementia diagnoses later in life.
The NIH funded the study, which was led by researchers at the University of Wisconsin-Madison and the University of Southern California.
The researchers analysed a UK education reform that raised the minimum school-leaving age by one year, treating it as a natural experiment.
What it means
The release says the effect was largest among people at higher genetic risk of dementia.
The researchers estimated a reduction of 0.88 percentage points in Alzheimer's disease and related dementia over 50 years, which the release calls sizeable given how low overall dementia rates were in the study population.
The release notes that as the group ages, the gap between those who stayed in school and those who left may grow or shrink.
This is research news from a US agency; it does not change UK guidance.
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