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Is social connection the key to prevention? Educational attainment, incident dementia, and the role of later-life
Alyssa W Goldman1, Hyungmin Cha2, Reza Tayari Ashtiani1
1Department of Sociology, Boston College, Chestnut Hill, Massachusetts, United States.
Innovation in Aging
|June 29, 2026
Summary
Higher educational attainment is linked to lower dementia risk, partly due to increased social engagement. Volunteering and group activities significantly reduce educational disparities in dementia incidence among older adults.
Area of Science:
- Gerontology
- Public Health
- Neuroscience
Background:
- Educational attainment and social engagement are key modifiable dementia risk factors.
- Limited research explores the interplay between education and social engagement in dementia risk.
- Understanding this relationship can inform interventions to reduce dementia disparities.
Purpose of the Study:
- To investigate social engagement as a mediator between education and dementia risk.
- To identify specific forms of social engagement that mitigate educational differences in dementia.
- To analyze these pathways in older adults in the United States.
Main Methods:
- Survival and counterfactual decomposition analyses of the National Health and Aging Trends Study (2011-2018).
- Assessment of mediation and interaction effects of social engagement on education-dementia link.
- Comparison of direct and indirect effects under hypothetical social engagement scenarios.
Main Results:
- Social activities like volunteering, group activities, and large discussion networks partially mediated the education-dementia association.
- Modeling volunteering, group activity attendance, and network size as mediators significantly attenuated educational disparities in dementia.
- These specific social engagement forms rendered educational differences in dementia incidence statistically nonsignificant.
Conclusions:
- Promoting volunteering, group activities, and social networks in older adults can reduce educational disparities in dementia risk.
- Findings highlight the potential of social engagement interventions to address health inequities.
- Further research is needed to explore underlying mechanisms and generalize findings to other social activities.
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