A similar protection was observed in subjects having supper before 9 pm compared with supper after 10 pm. Compared with subjects sleeping immediately after supper, those sleeping two or more hours after supper had a 20% reduction in cancer risk for breast and prostate cancer combined (adjusted Odds Ratio = 0.80, 95%CI 0.67–0.96) and in each cancer individually (prostate cancer OR = 0.74, 0.55–0.99 breast cancer OR = 0.84, 0.67–1.06). Adherence to the World Cancer Research Fund/American Institute of Cancer Research recommendations for cancer prevention was examined. Subjects were interviewed on timing of meals, sleep and chronotype and completed a Food Frequency Questionaire. In this analysis we included 621 cases of prostate and 1,205 of breast cancer and 872 male and 1,321 female population controls who had never worked night shift. We conducted a population-based case-control study in Spain, 2008–2013. We assessed whether timing of meals is associated with breast and prostate cancer risk taking into account lifestyle and chronotype, a characteristic correlating with preference for morning or evening activity. Modern life involves mistimed sleeping and eating patterns that in experimental studies are associated with adverse health effects.
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December 2022
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