Association of state happiness with mortality: Evidence from a prospective cohort study in Japan.

Abstract

This study found that greater happiness was associated with a lower risk of mortality among Japanese adults. The association remained after accounting for demographic, socioeconomic, and health-related factors. These findings suggest that positive emotional well-being may be a meaningful indicator of long-term health and could inform future public health research and practice. (PsycInfo Database Record (c) 2026 APA, all rights reserved)