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Long-term impacts of heatwaves on accelerated ageing
Climate change | Staying healthy and caring at home
Published: 25 August 2025
Date (DD-MM-YYYY)
26-08-2025 to 26-08-2026
Available on-demand until 26th August 2026
Cost
Free
Education type
Article
CPD subtype
On-demand
Description
Climate change and population ageing are both urgent global challenges. Yet the interaction between these, such as associations between long-term exposure to heatwaves and biological age acceleration (BAA), is unclear. Here we analysed data from 24,922 adults in a longitudinal cohort in Taiwan (2008–2022) and used linear mixed models to show heatwaves accelerate ageing. Heatwaves were defined using both relative and absolute thresholds. BAA was calculated as the difference between biological and chronological age. Each interquartile range increase in the cumulative exposure to heatwaves was associated with a 0.023- to 0.031-year increase in BAA. Moreover, the participants demonstrated gradual adaptation to heatwave impacts over the 15-year period. Furthermore, manual workers, rural residents and participants from communities with fewer air conditioners were more susceptible to the health impacts. This study highlights the need for targeted policies and interventions to strengthen adaptive capacity, delay ageing and promote healthy ageing.
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