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An ecological analysis of associations between ambient air pollution and cancer incidence rates in Taiwan

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Abstract

Air pollution is deemed a human carcinogen and can be linked to certain types of cancer other than lung cancer. The present study aimed to investigate the pollutant-cancer associations in a population-level cohort. We obtained the annual age-standardized incidence rates of 28 different cancer types between 2015 to 2019 from the Taiwan Cancer Registry. Outdoor concentrations of particulate matter with a diameter of 10 μm or less (PM10), sulfur dioxide (SO2), nitrogen dioxide (NO2), ground-level ozone (O3), and carbon monoxide (CO) between 2001 to 2010 were retrieved from the Taiwan Air Quality Monitoring Network. Weighted quantile sum (WQS) regression models were used to determine the combined effects of five air pollutants on the relationship to cancer incidence rates after controlling for sex ratio, age, average disposable income per household, overweight/obesity prevalence, current smoking rate, and drinking rate. Trend analyses showed that NO2 and CO concentrations tended to decrease, while SO2 concentrations increased in some counties. WQS regression analyses revealed significantly positive correlations between air pollutants and liver cancer, lung and tracheal cancer, colorectal cancer, thyroid cancer, kidney cancer, and small intestine cancer. Altogether, the results from this ecological study unravel that exposure to ambient air pollution is associated with the incidence of several non-lung cancer types.

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The datasets generated and/or analyzed during the current study are publicly available.

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Funding

This work was supported by research grants from the National Science and Technology Council of Taiwan (NSTC-110-2314-B-195-018-MY3) and MacKay Memorial Hospital (MMH-11314). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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Sheena Yi-Hsin Cheng: conceptualization, data collection, analysis, interpretation, and literature review, and manuscript writing. Yi-Chiung Hsu: conceptualization, analysis, interpretation, literature review. Shih-** Cheng: conceptualization, data collection, analysis, interpretation, literature review, and manuscript writing. All authors read and approved the final manuscript.

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Correspondence to Shih-** Cheng.

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The study protocol was approved by the institutional review board of MacKay Memorial Hospital.

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All authors approved of the final version prior to submission.

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The authors declare no competing interests.

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Responsible Editor: Lotfi Aleya

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Cheng, S.YH., Hsu, YC. & Cheng, SP. An ecological analysis of associations between ambient air pollution and cancer incidence rates in Taiwan. Environ Sci Pollut Res 31, 29162–29173 (2024). https://doi.org/10.1007/s11356-024-33145-9

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  • DOI: https://doi.org/10.1007/s11356-024-33145-9

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