The Link Between Life Satisfaction and Outcome-wide Health: Evidence from the Canadian Longitudinal Study on Aging.

Area of Science:

• Gerontology
• Public Health
• Psychology

Background:

• Intervening on transdiagnostic protective factors is key to improving physical health and reducing disease risks in older adults.
• Subjective well-being (SWB) is a potential transdiagnostic protective factor, but studies often overlook publication bias and causal model specification.
• Existing research on SWB's protective role needs robust validation against alternative causal models.

Purpose of the Study:

• To investigate the prospective relationship between life satisfaction and multiple health outcomes in older adults.
• To assess the robustness of this relationship across different causal model specifications.
• To determine if life satisfaction acts as a transdiagnostic protective factor for physical health.

Main Methods:

• Utilized three waves of longitudinal data from the Canadian Longitudinal Study of Aging (CLSA).
• Analyzed a large sample of 51,338 older adults.
• Tested the association between life satisfaction and 23 health outcomes using various causal models.

Main Results:

• A one standard deviation increase in life satisfaction predicted a 3-31% reduction in the risk of specific health diagnoses three years later.
• Positive associations were observed for outcomes like osteoarthritis, movement disorders, and respiratory tract diseases.
• Improved self-rated general health was also predicted by higher life satisfaction, with effects remaining consistent across model specifications.

Conclusions:

• Life satisfaction is prospectively linked to multiple positive health outcomes in older adults.
• The findings support life satisfaction as a significant protective factor against various diseases.
• Emphasizes the importance of analytical frameworks that account for confounder selection uncertainty in health research.