title: Vitamin D and its relationship with breast cancer: an evidence based practice paper.
abstract: BACKGROUND
  In oncology research fields, vitamin D has emerged as the most fruitful issue. The previous decade witnessed intensive efforts in connecting vitamin D with risk reduction and progression of various epithelial cancers, especially, breast cancer.
  
  
  OBJECTIVE
  To evaluate the relationship between vitamin D levels and breast cancer.
  
  
  METHODS
  A comprehensive search of several electronic databases was conducted in Pub Med, MEDLINE, CINAHL, in addition to, web search engine "Google" for abstracts, in order to determine the relationship between vitamin D and breast cancer.
  
  
  RESULTS
  It was found that an increased serum level of vitamin D is associated with decreased risk of breast cancer.
  
  
  CONCLUSIONS
  It was concluded that vitamin D plays a significant role in protection of breast cancer.
authors.forename: Jawad
authors.initials: J
authors.lastname: Obaidi
authors.forename: Eyad
authors.initials: E
authors.lastname: Musallam
authors.affiliation: 1. Al-Farabi College, Nursing department Riyadh, 11514 Saudi Arabia 2. AL al-Bayt University, Faculty of Nursing Mafraq, 25113 Jordan. hamzahjordan87@gmail.com.
authors.forename: Hamzah Mohammad
authors.initials: HM
authors.lastname: Al-Ghzawi
authors.forename: Saleh Nasser
authors.initials: SN
authors.lastname: Azzeghaiby
authors.forename: Ibrahim Nasir
authors.initials: IN
authors.lastname: Alzoghaibi
mesh_terms: D001943:Breast Neoplasms / Q000097:blood* / Q000517:prevention & control*; D055317:Evidence-Based Practice; D005260:Female; D006801:Humans; D014807:Vitamin D / Q000097:blood*
chemical_list: D014807:Vitamin D