Peer-reviewed article
UNDERSTANDING THE IMPACT OF OBESITY THROUGH THE LIFECOURSE ON LATER-LIFE FUNCTIONING AND DEPENDENCY
Jagger C ·
Summary
Written by AI, not yet AICS's view · claude-haiku-4-5-20251001This paper examines how obesity across childhood and adult life affects physical functioning and dependency in older age, using long-term UK birth cohort studies. It analyzes whether the timing and duration of obesity influence physical disability in later life and whether physical inactivity mediates this relationship. The research also uses simulation modeling to explore whether reducing mid-life obesity could decrease dependency and care needs in older populations.
Key points
- Study uses UK birth cohorts (1946-NSHD and 1958-NCDS) with longitudinal data from childhood through later life
- Poor physical functioning defined as lowest 10% on Short-form 36 subscale at ages 50-64 years
- Research examines timing and duration of obesity from childhood to mid-life as predictors of later-life functioning
- Investigates whether physical inactivity mediates the relationship between obesity and poor functioning
- Uses PACSim micro-simulation model to project potential impact of reducing mid-life obesity on dependency and care needs
Limitations
This appears to be an abstract or session overview rather than a full research report with detailed findings, so specific results, effect sizes, and conclusions are not provided. The document does not present actual outcomes or evidence of impact, only the research aims and methodology.
Abstract
Abstract Populations worldwide are seeing rising levels of obesity and its health consequences, particularly diabetes. Levels of childhood obesity are particularly high with concerns of how this will affect individuals’ health and functioning in mid and later life. Such research questions are difficult to answer as ideally they require longitudinal studies of cohorts from birth or childhood through to later life, with consistent measures of obesity and functioning throughout. The first two presentations in this session use the unique UK birth cohorts, the 1946 National Survey of Health and Development (1946-NSHD) and the 1958 National Child Development Study (1958-NCDS) with a focus on poor physical functioning (PF, i.e. the ability to perform physical tasks of daily living) in later life. Poor PF was defined as the lowest (gender and cohort-specific) 10% on the Short-form 36 subscale at 60-64y (1946-NSHD) and 50y (1958-NCDS). The presentations explore (i) how the timing of onset and duration of obesity, from childhood through to mid-life, affects later life PF, and (ii) whether the relationship between obesity and PF is mediated by physical inactivity. In the final presentation we utilise a new dynamic micro-simulation model, the Population Ageing and Care Simulation (PACSim) which simulates the ageing of a base population of individuals aged 35 years and over from three longitudinal studies (Understanding Society, the English Longitudinal Survey of Ageing, and the Cognitive Function and Ageing Study II) to examine the extent to which reducing obesity in mid life could potentially reduce later dependency and care needs.