Life satisfaction components and all-cause and cause-specific mortality: A large prospective cohort study

Area of Science:

• Psychology
• Public Health
• Gerontology

Background:

• The impact of life satisfaction components on longevity is not well understood.
• Investigating the association between life satisfaction and mortality is crucial for public health initiatives.

Purpose of the Study:

• To examine the relationship between overall life satisfaction and its individual components with all-cause and cause-specific mortality.
• To identify which aspects of life satisfaction may be targeted by psychological interventions to promote longevity.

Main Methods:

• A cohort study utilizing UK Biobank data from 165,842 participants.
• Life satisfaction assessed via a composite score and five individual components at baseline.
• Multivariable Cox regression analysis to determine hazard ratios for mortality outcomes over a median 12.9-year follow-up.

Main Results:

• Overall life satisfaction demonstrated an inverse association with all-cause mortality (adjusted HR 0.94 per 1-point increase).
• Health satisfaction was the strongest predictor of reduced mortality, independent of other factors (HR 0.52 for high/extreme satisfaction).
• Associations for family, friendship, work, and financial satisfaction were attenuated when controlling for other components.

Conclusions:

• Increased overall life satisfaction correlates with decreased mortality risk.
• Health satisfaction emerges as a significant factor for longevity, potentially serving as a target for positive psychological interventions.
• Findings highlight the importance of addressing health satisfaction for promoting longer, healthier lives.