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Night Shift Work-A Risk Factor for Breast Cancer.
Marta Szkiela1, Ewa Kusideł2, Teresa Makowiec-Dąbrowska3
1Department of Hygiene and Epidemiology, Department of Hygiene and Health Promotion; Faculty of Health Sciences, Medical University of Lodz, 90-647 Łódź, Poland.
International Journal of Environmental Research and Public Health
|January 24, 2020
Summary
Night shift work significantly increases breast cancer risk, doubling the odds even after accounting for other factors. This highlights the need for targeted cancer prevention strategies for night shift workers.
Area of Science:
- Occupational Health
- Epidemiology
- Oncology
Background:
- Shift work is a recognized occupational hazard linked to various health issues.
- Previous research suggests a potential association between shift work and increased cancer risk.
Purpose of the Study:
- To investigate the specific relationship between night shift work and breast cancer risk.
- To quantify the risk associated with night shift work, controlling for other known risk factors.
Main Methods:
- A case-control study was conducted in the Łódź region between 2015 and 2019.
- The study included 494 women with malignant breast cancer (cases) and 515 healthy women (controls).
- Data was collected using anonymous questionnaires, analyzing shift work patterns and other potential cancer risk factors.
Main Results:
- Women in the case group were more likely to be shift workers (51.9%) compared to the control group (34.1%).
- Night shift work demonstrated a significant association with breast cancer (OR = 2.61).
- The increased risk of breast cancer among night shift workers remained significant (OR = 2.20) even after adjusting for factors like BMI, smoking, and reproductive history.
Conclusions:
- Night shift work is a significant independent risk factor for breast cancer.
- The findings suggest a need for public health initiatives and policy considerations for cancer prevention among night shift workers in Poland.
- Further research into the biological mechanisms linking night work and breast cancer is warranted.
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