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  5. Biomedical And Clinical Sciences
  7. Oncology And Carcinogenesis
  9. Predictive And Prognostic Markers
  11. Exposure To Light At Night And Risk Of Cancer: A Systematic Review, Meta-analysis, And Data Synthesis

Exposure to Light at Night and Risk of Cancer: A Systematic Review, Meta-Analysis, and Data Synthesis

Samuel Ma1, Yossef Alsabawi2, Hashem B El-Serag3,4

  • 1School of Medicine, Baylor College of Medicine, Houston, TX 77030, USA.

Cancers
|August 10, 2024

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View abstract on PubMed

Summary
This summary is machine-generated.

Exposure to light at night (LAN) is linked to increased breast cancer risk in women. More research is needed to understand LAN

Area of Science:

  • Environmental health
  • Oncology
  • Epidemiology

Background:

  • Growing evidence suggests environmental factors, like light at night (LAN), may contribute to cancer development.
  • This study systematically reviews observational research on the association between LAN exposure and various cancer types.

Purpose of the Study:

  • To conduct a systematic review and meta-analysis of observational studies investigating the link between light at night (LAN) exposure and cancer risk.
  • To assess the association between LAN and multiple cancer types.

Main Methods:

  • A comprehensive literature search was performed across PubMed, Web of Science, and Embase up to May 2023.
  • Included studies focused on adult populations and LAN exposure. Random effects models were used for meta-analysis, and study quality was assessed using the Risk of Bias in Non-randomized Studies of Interventions tool.
Keywords:
breast cancercancer incidencelight at nightmeta-analysis

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Main Results:

  • Out of 8492 identified studies, 26 met the inclusion criteria, covering diverse cancer types globally.
  • A meta-analysis of 19 breast cancer studies revealed a positive association between higher indoor (RR 1.08) and outdoor (RR 1.10) LAN exposure and increased breast cancer risk.
  • No significant associations were found for other cancer types due to a lack of sufficient studies.

Conclusions:

  • Light at night (LAN) exposure is associated with an increased risk of breast cancer in women.
  • There is a significant lack of research on LAN exposure and other cancer types.
  • Further investigation is crucial to elucidate the role of LAN in the etiology of various cancers.
systematic review