Electromagnetic fields may not increase cancer risk, a
Danish study shows.
The study included more than 28,000 workers at 99 utility companies in
The researchers included Christoffer Johansen, MD, of the Danish Cancer
Society's Institute of Cancer Epidemiology in Copenhagen, Denmark.
They used Danish medical records to track new cases of leukemia, breast
cancer, or brain cancer among the utility workers over nearly 23 years, on
Johansen's team noted whether the workers had normal, medium, or high levels
of on-the-job exposure to electromagnetic fields.
The researchers found "no compelling evidence" of links between
cancer and the workers' exposure to electromagnetic fields.
The vast majority of the workers didn't develop leukemia, brain cancer, or
breast cancer during the study period.
On-the-job exposure to electromagnetic fields apparently didn't affect
cancer risk in the 70 men who developed leukemia, the 188 women who developed
breast cancer, and the 110 men and women who developed brain cancer, the study
shows. Since there were so few cases
of women who developedB leukemia and men who developedB breast cancer,
the researchers did not include them in the study analysis.
"The results do not support the hypothesis of an association between
occupational exposure to magnetic fields in the electric utility industry and
risks for leukemia, brain cancer, and breast cancer," write the
Their findings appear in Occupational and Environmental Medicine.
By Miranda Hitti
Reviewed by Louise Chang
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