title: Statin lipid-lowering drugs and bone mineral density.
abstract: BACKGROUND
  HMG Co-A reductase inhibitors (statin lipid-lowering drugs) have been associated with a reduced rate of fractures in some studies, but not in others. We examined the relationship between statin use and bone density among postmenopausal women.
  
  
  METHODS
  We conducted a cross-sectional survey at one academic medical center. Postmenopausal women who underwent bone densitometry and agreed to a telephone interview were surveyed about osteoporosis risk factors, use of hormone replacement therapy and osteoporosis medications and statin exposure. We then developed linear regression models adjusting for known counfounders to assess the relationship between statin use and bone mineral density (BMD).
  
  
  RESULTS
  Of 339 women studied, 162 were current or past users of statins, and 177 were not. Statin users and non-users were similar with respect to age, race, prior fracture history, the presence of medical conditions associated with osteoporosis, use of medications for osteoporosis, use of tobacco and use of oral glucocorticoids. Statin users had significantly higher body mass index (BMI) and rates of thiazide use, and were more likely to abstain from alcohol. After adjusting for important confounders, we found that statin use was associated with a significantly higher t-score at the total hip (-0.53 +/- 0.17) compared with non-users (-0.83 +/- 0.18; p = 0.02). At the lumbar spine, there was a trend toward higher t-scores in statin users (-0.91 +/- 0.24) compared with non-users (-1.21 +/- 0.23; p = 0.08).
  
  
  CONCLUSIONS
  These results support the hypothesis that statin use is associated with higher BMD. While it is unclear whether their relationship is causal, further controlled studies examining bone formation and resorption would help determine the clinical implications of these findings.
authors.affiliation: Division of Pharmacoepidemiology and Pharmacoeconomics, Brigham and Women's Hospital, Boston, MA 02120, USA. dhsolomon@partners.org
authors.forename: Daniel H
authors.initials: DH
authors.lastname: Solomon
authors.forename: Joel S
authors.initials: JS
authors.lastname: Finkelstein
authors.forename: Philip S
authors.initials: PS
authors.lastname: Wang
authors.forename: Jerry
authors.initials: J
authors.lastname: Avorn
mesh_terms: D015519:Bone Density / Q000187:drug effects*; D005260:Female; D006801:Humans; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors / Q000494:pharmacology*; D017698:Postmenopause
chemical_list: D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors