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The Cognitive Health Risk of Social Isolation Mediated by Dietary Risks: A Study with Older Korean Americans
Yeonwoo Kim1, Ahyoung Lee2, Soeun Jang3
1Department of Kinesiology, University of Texas at Arlington. Arlington, TX, United States.
American Journal of Health Behavior
|August 22, 2025
Summary
Social isolation in older Korean Americans increases cognitive impairment risk by negatively impacting diet. Addressing dietary habits is key for cognitive health promotion in socially isolated older immigrants.
Area of Science:
- Gerontology
- Public Health
- Nutritional Science
Background:
- Social isolation is a known risk factor for cognitive decline in older adults.
- Dietary patterns significantly influence cognitive health outcomes.
- Understanding the interplay between social factors, diet, and cognition is crucial for aging populations.
Purpose of the Study:
- To investigate the mediating role of dietary risk in the relationship between social isolation and cognitive impairment among older Korean Americans.
- To examine how social isolation influences dietary habits and subsequently affects cognitive health.
Main Methods:
- Utilized data from the Study of Older Korean Americans (N=2,061, mean age = 73 years).
- Employed predictive modeling to assess social isolation as an exposure, dietary risk as a mediator, and cognitive impairment as an outcome.
Main Results:
- Social isolation was significantly associated with cognitive impairment in the study population.
- Dietary risk was confirmed as a mediating factor, linking social isolation to cognitive impairment.
Conclusions:
- The detrimental effect of social isolation on cognitive health in older Korean Americans operates through its influence on dietary habits.
- Interventions targeting dietary risks are essential for promoting cognitive health, particularly among socially isolated older immigrants.
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