Optimism and Longevity Among Japanese Older Adults

Area of Science:

• Gerontology
• Psychology
• Public Health

Background:

• Optimism is linked to better health and longevity in Western studies.
• Limited research exists on optimism's effect on longevity in non-Western populations.
• This study investigates optimism and lifespan in older Japanese adults.

Purpose of the Study:

• To evaluate the association between optimism and lifespan in a Japanese older adult cohort.
• To determine if optimism predicts longevity across different sociodemographic groups in Japan.

Main Methods:

• Secondary data analysis of the Japan Gerontological Evaluation Study (n=10,472).
• Optimism measured using the Japanese version of the Life Orientation Test-Revised (LOT-R).
• Lifespan analyzed using mortality data over a 7-year follow-up with accelerated failure time models.

Main Results:

• No significant association was found between optimism (continuous or categorical) and lifespan in Japanese older adults.
• Adjusted analyses showed no link between optimism and longevity.
• The null association persisted across various sociodemographic strata.

Conclusions:

• Optimism is not associated with longevity in older Japanese adults, contrasting Western findings.
• Cultural context may moderate the relationship between optimism and lifespan.
• Further research is needed to understand cross-cultural differences in optimism and health outcomes.