Low bone mineral density is associated with increased risk for myocardial infarction in men and women

P Wiklund1, A Nordström, J-H Jansson

  • 1Department of Surgical and Perioperative Sciences, Sports Medicine, Umeå University, 90185 Umeå, Sweden.

Insights

Lower bone mineral density (BMD) is linked to a higher risk of myocardial infarction (MI) in both men and women. This association persists even after accounting for common cardiovascular risk factors.

Area of Science:

  • Orthopedics
  • Cardiology
  • Epidemiology

Background:

  • The connection between bone mineral density (BMD) and cardiovascular disease remains incompletely understood.
  • This prospective study aimed to explore the risk of myocardial infarction (MI) in relation to BMD.
  • The research also sought to determine if traditional cardiovascular risk factors could explain the observed association.

Purpose of the Study:

  • To investigate the association between bone mineral density (BMD) and the risk of myocardial infarction (MI).
  • To assess whether cardiovascular risk factors mediate or confound the relationship between BMD and MI.
  • To analyze these associations separately in men and women.

Main Methods:

  • Dual energy X-ray absorptiometry (DXA) was used to measure total hip and femoral neck BMD in 5,490 women and 1,382 men.
  • Participants were followed prospectively for a mean of 5.7 years, during which incident myocardial infarctions (MIs) were recorded.
  • Statistical analyses, including hazard ratios (HRs) and confidence intervals (CIs), were performed after adjusting for various covariates.

Main Results:

  • Lower BMD at the femoral neck and total hip was significantly associated with an increased risk of MI in both men and women.
  • These associations remained largely independent of age and BMI.
  • Further adjustment for smoking, hypertension, hypertriglyceridemia, and diabetes showed only slight attenuation of the risk estimates in men and women.

Conclusions:

  • Reduced bone mineral density is a significant risk factor for myocardial infarction in both sexes.
  • The observed association between lower BMD and increased MI risk is robust and not substantially explained by common cardiovascular risk factors.
  • Women consistently exhibited lower hazard ratios compared to men across all models.
Abstract

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