title: Prospective studies of dietary vitamin D and breast cancer: more questions raised than answered.
abstract: Prospective studies suggest that dietary vitamin D may at least modestly reduce the risk of breast cancer. This review addresses issues raised by recent studies, including differences in findings related to dietary source of vitamin D, menopausal status, and tumor characteristics. It also discusses the optimal timing of vitamin D assessment.
authors.affiliation: Division of Biostatistics and Epidemiology, Department of Public Health, School of Public Health and Health Sciences, University of Massachusetts, 715 North Pleasant Street, Amherst, MA 01003-9304, USA. ebertone@schoolph.umass.edu
authors.forename: Elizabeth R
authors.initials: ER
authors.lastname: Bertone-Johnson
mesh_terms: D000975:Antioxidants / Q000008:administration & dosage*; D001943:Breast Neoplasms / Q000453:epidemiology* / Q000517:prevention & control*; D019587:Dietary Supplements; D005260:Female; D006801:Humans; D015994:Incidence; D008593:Menopause / Q000502:physiology; D015596:Nutrition Assessment; D011446:Prospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D014807:Vitamin D / Q000008:administration & dosage*
chemical_list: D000975:Antioxidants; D014807:Vitamin D