title: [Influence of nutritional status, hormones serum levels, and family history on breast cancer development].
abstract: BACKGROUND
  Several studies have analyzed the relation between obesity and the hormonal imbalances generated by overweight and a family history of breast cancer. All of these factors are potentially implicated in the early development of breast cancer.
  
  
  OBJECTIVE
  To verify the existence of a significant relation between the nutritional status of breast cancer patients, their hormone serum levels (estrogens, prolactin, and progesterone), and the existence of a family history of breast cancer.
  
  
  METHODS
  Retrospective data was collected from clinical records of 524 women diagnosed with breast cancer in a Spanish hospital.
  
  
  RESULTS
  There was a positive association between estrogen, progesterone and prolactin serum levels and body mass index. The elevations in hormone levels occurred earlier in life among women with a family history of breast cancer. A two way ANOVA found a significant association between progesterone and prolactin levels with the age at diagnosis of breast cancer.
  
  
  CONCLUSIONS
  Extreme serum levels of these hormones appear to be related to the early development of breast cancer, which in turn is influenced by the existence of a family history of cancer among those women with normal or average hormone levels.
authors.affiliation: Departamento de Enfermería, Facultad de Enfermería, Universidad de Granada, Melilla, Spain. emigoji@ugr.es
authors.forename: Emilio
authors.initials: E
authors.lastname: González Jiménez
authors.forename: Pedro A
authors.initials: PA
authors.lastname: García López
authors.forename: Jacqueline
authors.initials: J
authors.lastname: Schmidt-Río-Valle
authors.forename: Carmen
authors.initials: C
authors.lastname: Valenza
mesh_terms: D017668:Age of Onset; D000704:Analysis of Variance; D001943:Breast Neoplasms / Q000097:blood / Q000209:etiology* / Q000235:genetics; D004967:Estrogens / Q000097:blood*; D005260:Female; D006801:Humans; D009752:Nutritional Status / Q000502:physiology*; D009765:Obesity / Q000097:blood* / Q000453:epidemiology; D009767:Obesity, Morbid / Q000097:blood / Q000453:epidemiology; D011374:Progesterone / Q000097:blood*; D011388:Prolactin / Q000097:blood*; D012189:Retrospective Studies
chemical_list: D004967:Estrogens; D011374:Progesterone; D011388:Prolactin