A population-based cohort study of occupational exposure to magnetic fields and cardiovascular disease mortality

Ann Epidemiol. 2009 Jan;19(1):42-8. doi: 10.1016/j.annepidem.2008.10.001.


Purpose: This cohort study aims to examine cardiovascular disease (CVD) mortality risks among workers in occupations potentially exposed to magnetic fields (MF).

Methods: Risks for major CVD mortality by potential job-related MF exposure were examined in a sample of U.S. workers from the National Longitudinal Mortality Study using multivariate proportional hazards models.

Results: After adjustment for demographic factors, there were no significant excess risks between individuals with medium (0.15 to <0.20 microT), high (0.20 to < 0.30 microT), or very high (>/= 0.30 microT) exposure levels as compared with individuals with background exposure levels of MF (<0.15 microT) for the CVD mortality outcomes. Indirect adjustment for potential confounding by current smoking prevalence did not change the pattern of these results.

Conclusion: Our study does not provide evidence for an association between occupational MF exposure and CVD mortality risk.

MeSH terms

  • Adult
  • Aged
  • Cardiovascular Diseases / mortality*
  • Cohort Studies
  • Electromagnetic Fields / adverse effects*
  • Female
  • Health Behavior
  • Humans
  • Male
  • Middle Aged
  • Occupational Diseases / mortality*
  • Occupational Exposure / statistics & numerical data*
  • Risk Factors