Enhancing Longevity: Dietary Diversity's Role in Reducing Mortality Through Physical and Cognitive Health
Recent findings highlight the significant role dietary diversity plays in prolonging life among older adults living in communities. By analyzing a large cohort of seniors, researchers discovered that a varied diet correlates strongly with reduced mortality rates. The study uniquely underscores how both physical activities and cognitive functions serve as crucial mediators in this process, enhancing the protective effects of dietary diversity on longevity.
The investigation utilized rigorous methods to assess the intake of different food groups, physical activity levels, and cognitive health through established evaluation tools. Results indicate that engaging in diverse dietary habits can substantially mitigate the risk factors associated with early mortality by improving physical and cognitive resilience. These protective effects are amplified when combined with regular physical activities and maintained cognitive functions, suggesting that lifestyle interventions can significantly bolster health outcomes in older populations.
As societies continue to age, this research provides invaluable insights into practical strategies for aging healthily. Promoting dietary diversity, alongside encouraging regular physical and mental exercises, could form the cornerstone of public health policies aimed at enhancing the quality of life and longevity for older adults. This approach advocates for an integrated lifestyle intervention, emphasizing the synergy between diet, physical activity, and cognitive health to combat mortality effectively.
Article Information
Mediating effects of physical activities and cognitive function on the relationship between dietary diversity and all-cause mortality in community-dwelling older adults
Published in J Glob Health. Chi Zhang et al.
Abstract
Background: Although dietary diversity (DD) has been confirmed to be associated with multiple health outcomes and longevity in older people, the related mechanisms have not been elucidated. In this study, we explored the mediating roles of physical activities and cognitive function in the relationship between DD and all-cause mortality.
Methods: We recruited 34 068 community-dwelling older adults aged ≥60 years from the Chinese Longitudinal Healthy Longevity Study and followed them up until 2018. Dietary diversity score (DDS) was assessed by the intake frequency of nine food sources. We evaluated physical activities and cognitive function using the Katz index and Mini-Mental State Examination. We explored the mediating roles of physical activities and cognitive function between DDS and all-cause mortality using mediated analyses in Cox proportional risk regression models.
Results: A total of 25 362 deaths were recorded during 148 188.03 person-years of follow-up. Participants with physical disability and cognitive impairment had lower DDS than the normal group (P < 0.001). After controlling for all covariates, DDS, physical activities, and cognitive functioning were negatively associated with all-cause mortality. Physical activities and cognitive function mediated 18.29% (95% confidence interval (CI) = 12.90-23.10) and 27.84% (95% CI = 17.52-37.56) of the total effect of DDS on mortality, respectively.
Conclusions: Physical activities and cognitive function mediated the association between DDS and all-cause mortality. Maintaining DD may benefit early death prevention by reducing physical disability and cognitive impairment in community-dwelling older people.
Bring preventive care to your clinic
© Longevity Artificial Intelligence. All rights reserved.