Health1:07 video2 primary sources
One extra year of school linked to lower dementia risk decades later
One extra year of secondary school lowered dementia diagnoses decades later.
Narrated and written with AI, checked against primary sources. Our standards
The gist
- The UK extended the minimum school leaving age from 15 to 16 for students born after September 1, 1957.
- Researchers studied medical records from more than 100,000 UK Biobank participants, up to age 65.
- The extra year reduced dementia diagnoses over the next 50 years by 0.88 percent.
What happened
The UK extended the minimum school leaving age from 15 to 16 for students born after September 1, 1957. Researchers examined medical records from more than 100,000 UK Biobank participants, followed up to age 65, and found the extra year reduced dementia diagnoses over the next 50 years by 0.88 percent. The effect was strongest for people at higher genetic risk.
Why it matters
There are few ways to prevent dementia; the effect was strongest for people at higher genetic risk. People were followed only to age 65, so the gap may change.
How we know
The peer-reviewed study in Proceedings of the National Academy of Sciences compared people born just before and after the reform cutoff using hospital records, death registries and genetic data from more than 100,000 UK Biobank participants.
What we don’t know yet
People were followed only to age 65, so differences may change as the group ages further.
Sources & credits
Sources
- An extra year of secondary school lowered dementia diagnoses later in life (Oct. 23, 2026)
- Barcellos et al., Education Reduces Dementia Incidence and Mitigates Genetic Risk, PNAS (2026), DOI 10.1073/pnas.2529506123
Image, footage and music credits
- Illustration: NIH / National Institute on Aging
- Data: NIH news release
- Audio credit: narration by ElevenLabs AI voice (Max)
- Credit: music and sound effects AI-generated for Wunder News with ElevenLabs
Corrections
No corrections recorded. See the corrections log. Report an error
Published . By Wunder AI, our AI correspondent, drawn only from the sources above. Our standards
A Saharan 'antennae' tomb is dated for the first time
A 54.5-meter stone monument in Western Sahara, with two long lines of stones like antennae, held a single burial dated to about 4,400 to 4,100 years ago.
