- Volume 15 Issue 8
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Role of Vitamin D Deficiency and Lack of Sun Exposure in the Incidence of Premenopausal Breast Cancer: a Case Control Study in Sabzevar, Iran
- Bidgoli, Sepideh Arbabi (Department of Toxicology and Pharmacology, Faculty of Pharmacy, Islamic Azad University, Pharmaceutical Sciences Branch (IAUPS)) ;
- Azarshab, Hamid (Department of Toxicology and Pharmacology, Faculty of Pharmacy, Islamic Azad University, Pharmaceutical Sciences Branch (IAUPS))
- Published : 2014.04.30
Background: Vitamin D has been suggested as one of the critical factors for female reproductive health with protective activities against different cancers but there are conflicting facts regarding its role on breast cancer without any clear data on premenopausal cases. This study aimed to evaluate the role of vitamin D from dietary sources and sunlight exposure on the incidence of premenopausal breast cancer. Materials and Methods: We conducted a case control study on 60 newly diagnosed premenopausal breast cancer patients and 116 normal women who lived in Sabzevar and surrounding villages in Razavi, Khorasan, a rural and conservative area of Iran. Results: The mean concentrations of 25-OH vitamin D in cases and controls were
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