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Dietary intake of vitamin d and calcium and breast cancer risk in the European prospective investigation into cancer and nutrition
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2013 (English)In: Nutrition and Cancer, ISSN 0163-5581, E-ISSN 1532-7914, Vol. 65, no 2, 178-187 p.Article in journal (Refereed) Published
Abstract [en]

Studies assessing the effects of vitamin D or calcium intake on breast cancer risk have been inconclusive. Furthermore, few studies have evaluated them jointly. This study is the largest so far examining the association of dietary vitamin D and calcium intake with breast cancer risk in the European Prospective Investigation into Cancer and Nutrition. During a mean follow-up of 8.8 yr, 7760 incident invasive breast cancer cases were identified among 319,985 women. Multivariable Cox proportional hazards regression was used to estimate hazard ratios (HR) and 95% confidence intervals (CI) for pre- and postmenopausal breast cancer risk. Comparing the highest with the lowest quintile of vitamin D intake, HR and 95% CI were 1.07 (0.87-1.32) and 1.02 (0.90-1.16) for pre- and postmenopausal women, respectively. The corresponding HR and 95% CIs for calcium intake were 0.98 (0.80-1.19) and 0.90 (0.79-1.02), respectively. For calcium intake in postmenopausal women, the test for trend was borderline statistically significant (P(trend) = 0.05). There was no significant interaction between vitamin D and calcium intake and cancer risk (P(interaction) = 0.57 and 0.22 in pre- and postmenopausal women, respectively). In this large prospective cohort, we found no evidence for an association between dietary vitamin D or calcium intake and breast cancer risk.

Place, publisher, year, edition, pages
Taylor & Francis, 2013. Vol. 65, no 2, 178-187 p.
National Category
Cancer and Oncology Surgery
URN: urn:nbn:se:umu:diva-76727DOI: 10.1080/01635581.2013.752018PubMedID: 23441605OAI: diva2:636803
Available from: 2013-07-12 Created: 2013-07-12 Last updated: 2014-01-29Bibliographically approved

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Lenner, PerSund, Malin
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