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Night Shift Work and Risk of Breast Cancer in Women
Lilia Patricia Bustamante-Montes1, Beatriz Flores-Meza2, María A Hernández-Valero3
1Decanato de Ciencias de la Salud, Universidad Autónoma de Guadalajara, Guadalajara, Jalisco, México.
Archives of Medical Research
|November 6, 2019
Summary
Night shift work is linked to a higher risk of breast cancer in Mexican women. This finding supports previous research and highlights potential occupational health concerns for women in this demographic.
Area of Science:
- Epidemiology
- Occupational Health
- Oncology
Background:
- Circadian disruption from night shift work is debated as a risk factor for breast cancer.
- Previous epidemiological studies suggest a potential link, but evidence remains inconclusive.
Purpose of the Study:
- To investigate the association between night shift work and breast cancer incidence.
- Focus on a population of Mexican women.
Main Methods:
- Case-control study design.
- Inclusion of 101 breast cancer cases and 101 matched controls.
- Data collected via interviews on past exposures.
Main Results:
- Night shift work was associated with an increased likelihood of developing breast cancer (OR=8.58).
- Breast-feeding showed a reduced risk (OR=0.12).
- Early menarche (≤12 years) was linked to higher breast cancer risk (OR=18.58).
Conclusions:
- Findings align with international studies linking night shift work to breast cancer.
- Suggests night shift work as a potential risk factor for breast cancer in Mexican women.
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