Mental component of health-related quality of life is an independent predictor of incident functional disability among community-dwelling older people: a prospective cohort study

The study investigates the predictive role of mental health-related quality of life (HRQOL) in incident functional disability among community-dwelling older adults in Japan. Using a prospective cohort design, the research finds that the mental component of HRQOL at baseline independently predicts the 3-year incidence of functional disability, even after adjusting for potential confounders including physical HRQOL and socio-economic factors. This finding suggests that maintaining or improving mental HRQOL is crucial for promoting healthy aging and reducing the burden of disability in daily living. The study highlights the importance of mental health in the context of aging and underscores the need for interventions targeted at enhancing mental well-being to support a healthy and long-lived society.