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Night-shift work tied to higher cancer risks in women

Analysis of data from 61 studies linked working the night shift on a long-term basis to an overall 19% higher risk of cancer in women, researchers reported in Cancer Epidemiology, Biomarkers & Prevention. Data on female nurses found those working a night shift had a 58% higher risk of breast cancer, a 35% higher risk of gastrointestinal cancer and a 28% increased likelihood of getting lung cancer, compared with nurses who did not work nights.

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