title: Oral contraceptives do not affect magnesium in breast milk.
abstract: OBJECTIVE
  To study the effects of oral contraceptives on magnesium metabolism of lactating mothers.
  
  
  METHODS
  Serum and breast-milk magnesium were measured in three groups of mothers that were using combination pill (12), mini-pill (21), and a control group (21).
  
  
  RESULTS
  There was no significant effect of oral contraceptives on breast-milk magnesium.
  
  
  CONCLUSIONS
  The use of oral contraceptives such as the combination pill and mini-pill does not seem to affect the secretion of magnesium in breast milk.
authors.affiliation: Faculdade de Ciencias da Saúde, Universidade de Brasilia, Brasilia, Brazil. dorea@rudah.com.br
authors.forename: J G
authors.initials: JG
authors.lastname: Dórea
mesh_terms: D000328:Adult; D015986:Confounding Factors, Epidemiologic; D003277:Contraceptives, Oral, Combined / Q000009:adverse effects*; D004997:Ethinyl Estradiol / Q000009:adverse effects*; D005191:Family Characteristics; D005260:Female; D006801:Humans; D016912:Levonorgestrel / Q000009:adverse effects*; D008274:Magnesium / Q000032:analysis* / Q000097:blood; D008423:Maternal Age; D008895:Milk, Human / Q000737:chemistry* / Q000187:drug effects* / Q000378:metabolism; D009640:Norethindrone / Q000009:adverse effects*; D012923:Social Class; D013997:Time Factors
chemical_list: D003277:Contraceptives, Oral, Combined; D004997:Ethinyl Estradiol; D016912:Levonorgestrel; D008274:Magnesium; D009640:Norethindrone