4.7 Article

The incidence of asthma attributable to temperature variability: An ecological study based on 1990-2019 GBD data

Journal

SCIENCE OF THE TOTAL ENVIRONMENT
Volume 904, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.scitotenv.2023.166726

Keywords

Climate change; Terra climate; Shared socioeconomic pathways; Global warming

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The study finds that maximum temperature variability is associated with asthma incidence, especially for individuals living in high-latitude areas or aged from 50 to 70 years. The predictions also show that the incidence of asthma is expected to decrease by 95.55%, 79.32%, and 40.02% under the SSP126, SSP245, and SSP370 scenarios, respectively, compared to the SSP585 at latitudes >60 degrees.
Background: Asthma, the second leading cause of death from chronic respiratory diseases, is associated with climate change, especially temperature changes. It is currently unclear about the relationship between long-term temperature variability and the incidence of asthma on a global scale.Methods: We used asthma incidence, demographic and socioeconomic data from the Global Burden of Disease (GBD) Results Database, and environmental and geographical statistics from TerraClimate between 1990 and 2019 to determine the association between maximum temperature variability and asthma incidence. We also predicted the incidence of heat-related asthma in the future (2020-2100) under four shared socioeconomic pathways (SSPs: 126, 245, 370, and 585).Results: Between 1990 and 2019, the global median incidence of asthma was 402.0 per 100,000 with a higher incidence (median: 1380.3 per 100,000) in children under 10 years old. We found that every 1 degree celsius increase in maximum temperature variability increased the risk of asthma globally by 5.0 %, and the effect was robust for individuals living in high-latitude areas or aged from 50 to 70 years. By 2100, the average incidence of asthma is estimated to be reduced by 95.55 %, 79.32 %, and 40.02 % under the SSP126, SSP245, and SSP370 scenarios, respectively, compared to the SSP585 at latitudes >60(degrees).Conclusion: Our study provides evidence that maximum temperature variability is associated with asthma incidence. These findings suggest that implementing stricter mitigation and adaptation strategies may be importment in reducing asthma cases caused by climate change.

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