Healthy lifespan trends diverged among older adults in China
A longitudinal observational study used 93,581 survey observations from 1998–2018 to estimate years lived with cognitive impairment, disability and major chronic diseases.
93,581 observations
Limit: Exact timing of health changes between survey observations was unavailable and had to be modeled
Edited by Boris Djordjevic · AgingResearch.News
Among Chinese older adults born from 1895 to 1949, an observational study linked later birth cohorts to contrasting trends in healthy life expectancy. Researchers analyzed survey data collected from 1998 to 2018. They used statistical models to estimate transitions between health states and the remaining years of life spent in each.
After accounting for age and sex, later-born groups had a delayed onset of cognitive impairment and a smaller estimated share of life spent with it. The share lived with disability in daily activities stayed largely stable or declined only slightly. In contrast, both the estimated years and share of life spent with major chronic diseases increased. The onset of these diseases declined only marginally across birth cohorts, while mortality among people living with them fell substantially.
Why it matters
For rapidly aging societies, the authors argued that these trends support a shift from treating acute illness toward proactive chronic disease management and coordinated long-term care.
Caveats
These observational, model-based estimates cannot establish what caused the differences between birth cohorts. The findings concern older adults in China and may not extend to other populations.
The paper
Minzu University of China; Nankai University
SSM - Population Health, Jul 15, 2026, Open access
