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Social Adversities Linked to Cognitive Decline in Latin America

9/18/2025

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Summary

Story summary

A study in Nature Communications connects cumulative social adversities to cognitive decline and brain changes in Latin America.
Researchers analyzed data from 2,211 individuals, including healthy older adults and dementia patients across six countries.
They created a social exposome score reflecting lifetime adversity, correlating with cognitive function and daily living skills.
Higher adversity scores linked to reduced gray matter volume and altered brain connectivity.
Findings indicate that addressing societal inequalities may enhance brain health and prevent dementia.

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Story summary

A study in Nature Communications connects cumulative social adversities to cognitive decline and brain changes in Latin America.
Researchers analyzed data from 2,211 individuals, including healthy older adults and dementia patients across six countries.
They created a social exposome score reflecting lifetime adversity, correlating with cognitive function and daily living skills.
Higher adversity scores linked to reduced gray matter volume and altered brain connectivity.
Findings indicate that addressing societal inequalities may enhance brain health and prevent dementia.