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EMF Study
(Database last updated on Oct 14, 2021)

ID Number 1662
Study Type Epidemiology
Model RF exposure to local residents from radio and TV broadcast towers and evaluation of biomarkers including melatonin, ODC, polyamines, estrogen, and immune markers

Residents (n = 280) in Colorado living in proximity of several radio and TV towers were evaluated for correlations between residential RF and ELF exposure and several biomarkers. The authors report higher RF + ELF exposures combined elevated night-time melatonin metabolite excretion levels, higher ELF (but not RF) exposure elevated markers of DNA damage, and higher RF exposures were associated with increased total peripheral T cells and a decrease in ODC activity (but not polyamine concentration) in both mitogen stimulated and unstimulated leucocytes. In related studies using the same areas, the authors reported increased estrogen levels in post-menopausal but not in pre-menopausal women with increasing RF field levels.

Findings Effects
Status Completed With Publication
Principal Investigator Colorado State University, USA -
Funding Agency NIEHS, USA
  • Clark, M et al. J Occup Environ Med., (2007) 49:1149-1156
  • Clark, ML et al. J Occup Environ Med, (2007) 49:1149-1156
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