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  11. Social Isolation, Healthy Lifestyle, And Intrinsic Capacity Among Older Adults In China: A Longitudinal Study

Social isolation, healthy lifestyle, and intrinsic capacity among older adults in China: A longitudinal study

Xiao Yue1, Quan Yuan2, Rong Zhou1

  • 1Department of Geriatric Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Nursing Department, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, WuHan, China.

The Journal of Nutrition, Health & Aging
|May 23, 2025

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View abstract on PubMed

Summary
This summary is machine-generated.

Social isolation negatively impacts older adults' intrinsic capacity (IC), while a healthy lifestyle improves it. A healthy lifestyle can buffer some negative effects of social isolation on IC in older Chinese adults.

Area of Science:

  • Gerontology
  • Public Health
  • Sociology

Background:

  • Intrinsic capacity (IC) is crucial for healthy aging.
  • Social isolation and lifestyle factors are known to influence health outcomes in older adults.
  • Understanding their combined effects on IC is vital for targeted interventions.

Purpose of the Study:

  • To investigate the independent and interactive associations of social isolation and healthy lifestyle with intrinsic capacity (IC) in older Chinese adults.
  • To analyze the impact of these factors using longitudinal data.

Main Methods:

  • Longitudinal cohort study using data from the China Health and Retirement Longitudinal Study (CHARLS) (2011-2015).
  • Included 4495 adults aged 60+ with complete data.
  • IC assessed via a composite score (locomotor, cognitive, sensory, vitality, psychological); social isolation and healthy lifestyle measured using established indices.
Keywords:
AgingCHARLSHealthy lifestyleIntrinsic capacity

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  • Multiple linear regression and linear mixed-effects models used for analysis.

    • Main Results:

    • Social isolation was negatively associated with IC (higher isolation scores correlated with lower IC).
    • A healthy lifestyle was positively associated with IC (more healthy behaviors correlated with higher IC).
    • A healthy lifestyle partially mitigated the negative impact of social isolation on IC, though this protective effect diminished with increasing social isolation.

    Conclusions:

    • Both social isolation and healthy lifestyle significantly impact intrinsic capacity in older Chinese adults.
    • Interventions should address both social engagement and health behaviors to support IC.
    • Findings underscore the importance of a holistic approach to promoting healthy aging.
    Longitudinal study
    Public health
    Social isolation