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Social Isolation Model: A Noninvasive Rodent Model of Stress and Anxiety
Published on: November 11, 2022
Social Isolation and Health Outcomes in Japan: A Nationwide Cross-Sectional Study
Hiroshi Ito1,2, Shuichi Okaya1, Tatsuya Watanabe2,3
1Department of Hospital Medicine, University of Tsukuba Hospital, Tsukuba, Japan.
JMA Journal
|August 11, 2026
Summary
Social isolation impacts subjective health and symptom burden, but not diagnosed chronic diseases. Socially isolated individuals also access healthcare less often, highlighting unmet needs.
Area of Science:
- Public Health
- Social Determinants of Health
- Gerontology
Background:
- Social isolation is a significant social determinant of health.
- Its precise impact on various health outcomes requires further investigation.
Purpose of the Study:
- To examine the association between structural social isolation and health outcomes in Japan.
- Investigated links to subjective health, symptom burden, chronic diseases, and healthcare utilization.
Main Methods:
- Nationwide cross-sectional study (2024 Japan coronavirus disease 2019 and Society Internet Survey).
- Included 25,014 adults aged 18-79.
- Assessed social isolation (Lubben Social Network Scale-6), self-rated health, symptom burden (Somatic Symptom Scale-8), chronic diseases, and healthcare-seeking behaviors.
Main Results:
- 59.3% of participants were socially isolated.
- Social isolation correlated with poor self-rated health (AOR: 1.54) and high symptom burden (AOR: 1.23).
- No association found with most chronic diseases; isolated individuals had less regular doctor visits and preventive care.
Conclusions:
- Structural social isolation is linked to worse subjective health and symptom burden.
- Diagnosis-based health indicators may miss the needs of socially isolated populations.
- Healthcare systems may underestimate health needs if solely relying on diagnoses.
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