Neighborhood and cognitive performance in middle-age: Does racial residential segregation matter?

https://www.eurekalert.org/pub_releases/2020-05/cums-nac050820.php

News Release 8-May-2020
Columbia University's Mailman School of Public Health

A study at Columbia University Mailman School of Public Health found that black subjects who were exposed to highly segregated neighborhoods in young adulthood exhibited worse performance in cognitive skills in mid-life. The findings are published online in JAMA Neurology.

Until this research, there had been little information on the association of racial residential segregation and cognitive function.

"Our findings support the notion that long-term exposure to residential segregation during 25 years of young adulthood is associated with worse processing speed as early as midlife," said Adina Zeki Al Hazzouri, PhD, assistant professor of epidemiology at Columbia Mailman School. "This outcome may explain black-white disparities in dementia risk at older age."

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Earlier studies by Zekie Al Hazzouri and colleagues had supported growing evidence that maintaining cognitive function is a lifelong process and that several of the most important risk factors may begin earlier in the life course.

"Studies examining racial residential segregation in the context of cognitive function are limited, and thus our findings contribute to an important yet sparse literature," observed Zeki Al Hazzouri. "More importantly, our research indicates that policies that address segregation and the uneven distribution of resources, may be beneficial for reducing inequities in cognitive performance."