Working night shift may raise ovarian cancer risk

The study involved 1101 US women with invasive epithelial ovarian cancer, 398 women with borderline epithelial tumours and 1832 controls.

Working night shifts was associated with a 24% increased risk of advanced cancer and a 48% increased risk of early stage disease, compared to those who worked normal office hours.

Among women with invasive cancer, 26.6% had ever worked nights, compared to 32.4% of those with borderline disease and 22.5% of the comparison group.

“As has been hypothesised for breast cancer, melatonin may impact ovarian cancer

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