title: Variations in body mass index of users of depot-medroxyprogesterone acetate as a contraceptive.
abstract: BACKGROUND
  Weight gain is a frequent reason for discontinuing the contraceptive with depot-medroxyprogesterone acetate (DMPA).
  
  
  METHODS
  This 3-year retrospective cohort study assessed body mass index (BMI; kg/m(2)) variations in 379 current or past DMPA users compared to TCu380A intrauterine device (IUD) users matched for age and BMI, categorized into G1 (normal weight), G2 (overweight) or G3 (obese) according to baseline BMI. Variations in weight and BMI were evaluated using analysis of variance.
  
  
  RESULTS
  BMI increased progressively in all groups but significantly more in G1 and G2 DMPA users compared to nonusers and according to duration of use. In the G3 subgroup, weight trends were similar in the DMPA and IUD users.
  
  
  CONCLUSIONS
  Normal and overweight women increased BMI with DMPA use; however, obese women did not increase weight. Weight increase in DMPA users could be associated with metabolic alterations related to duration of use in normal and overweight women and to alterations already present in obese women. Prospective studies are required to determine triggering factors. DMPA use <or=3 years was not associated with weight increase in women with BMI (kg/m(2)) >or=30.
authors.affiliation: Human Reproduction Unit, Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas (UNICAMP), and National Institute of Hormones and Women Health, Campinas, SP 13084-971, Brazil.
authors.forename: Márcia
authors.initials: M
authors.lastname: Pantoja
authors.forename: Tatiane
authors.initials: T
authors.lastname: Medeiros
authors.forename: Maria Carolina
authors.initials: MC
authors.lastname: Baccarin
authors.forename: Sirlei Siani
authors.initials: SS
authors.lastname: Morais
authors.forename: Luis
authors.initials: L
authors.lastname: Bahamondes
authors.forename: Arlete Maria dos Santos
authors.initials: AM
authors.lastname: Fernandes
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D015992:Body Mass Index; D001835:Body Weight / Q000187:drug effects*; D015331:Cohort Studies; D003271:Contraceptive Agents, Female; D005260:Female; D006801:Humans; D007435:Intrauterine Devices, Copper / Q000009:adverse effects; D017258:Medroxyprogesterone Acetate / Q000008:administration & dosage* / Q000009:adverse effects*; D009765:Obesity; D050177:Overweight; D012189:Retrospective Studies; D015430:Weight Gain / Q000187:drug effects*
chemical_list: D003271:Contraceptive Agents, Female; D017258:Medroxyprogesterone Acetate