College doesn't protect your brain from aging because it made you smarter—it works because it made you rich.
April 3, 2026
Original Paper
Early-Life Education, Midlife Circumstances, and Late-Life Cognition
SSRN · 6504667
The Takeaway
We've long believed that schooling builds 'cognitive reserve' that prevents dementia. In reality, most of education's benefit comes from the fact that educated people get better jobs and safer lives, suggesting we can protect the elderly by improving midlife working conditions.
From the abstract
Background: Dementia is currently without cure; only prevention can reduce its human and economic burden. The Lancet Commission lists 14 modifiable risk factors for dementia that can serve as departure points for preventive action, starting with education and followed by lifestyle and midlife factors. Little is known about the relative contribution of each of these factors to successful prevention, and how early-life education interacts with midlife circumstances. <div> <br> </div> <div> Methods