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Artificial night light and thyroid cancer. | LitMetric

Artificial night light and thyroid cancer.

World J Methodol

Department of Endocrinology, Diabetes and Metabolism, Elena Venizelou General Hospital, Athens GR-11521, Greece.

Published: March 2024

Background: The occurrence of thyroid cancer (TC) has increased in recent decades. Exposure to outdoor artificial light at night (ALN) is associated with an increased risk of cancer.

Aim: To investigated the impact of ALN, as a significant environmental pollutant, on TC incidence worldwide.

Methods: The assessment involved analyzing satellite ALN data in conjunction with TC incidence data [adjusted standardized rate (ASR)], while considering the quality of cancer registries (QCR), gross domestic product (GDP) per person, and health expenditure per person (HEP) for each country.

Results: Results indicated a correlation between higher ASR and ALN exposure percentages, particularly in countries with higher GDP or HEP quartiles (all < 0.05). Significant differences in ASR were observed across QCR levels, both high and low quality (all < 0.05), but not in countries without registry activity. However, when evaluating ASR against ALN exposure percentages while considering GDP/HEP quartiles or QCR levels, no significant associations were found (all > 0.10).

Conclusion: The findings suggest a potential link between higher GDP and adverse health conditions, serving as possible risk factors for TC, rather than a direct association with ALN. Limitations include the use of cross-sectional data, temporal misalignment, and reliance on ALN as a socioeconomic proxy. It is proposed that light pollution might be connected to a lifestyle conducive to carcinogenesis. Additionally, the presence of higher GDP/HEP could enhance access to diagnostic resources, potentially facilitating TC diagnosis and inclusion in cancer registries.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10989407PMC
http://dx.doi.org/10.5662/wjm.v14.i1.89853DOI Listing

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