Launch Catch-Up — Study Reported October 23, 2026
An NIH-funded study used a British education reform to examine whether an additional year of school affected dementia diagnoses decades later, the National Institutes of Health reported October 23.
The 1972 reform raised the minimum school-leaving age from 15 to 16. Researchers compared medical records for more than 100,000 UK Biobank participants affected or unaffected by the change.
NIH said the additional schooling was associated with fewer diagnoses over the following 50 years, with the strongest signal among participants carrying genetic variants linked to higher dementia risk.
The design addresses a difficult question: whether education itself changes risk, rather than simply accompanying other advantages. Researchers also linked the reform to socioeconomic and health improvements that might help explain the findings.
A limitation is age. Diagnoses were counted before December 2022, when the oldest participants were 65. Dementia was uncommon in this population, and differences could grow or shrink as participants age.
The findings concern this cohort and follow-up period, not a guarantee against dementia.
Sources: https://www.nih.gov/news-events/news-releases/extra-year-secondary-school-lowered-dementia-diagnoses-later-life