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Risks of leukaemia among residents close to high voltage transmission electric lines

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Authors not listed · 1997

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Living near high-voltage power lines increases leukemia risk by 30% at magnetic field levels of 2 milligauss.

Plain English Summary

Summary written for general audiences

This 1997 meta-analysis examined multiple studies on leukemia risk for people living near high-voltage power lines (49 kV and above). Researchers found a 30% increased leukemia risk for magnetic field exposures at 2 milligauss or higher, with risk increasing at higher exposure levels. The analysis included both adults and children living within 50 meters of transmission lines.

Why This Matters

This meta-analysis represents a pivotal moment in EMF research, providing some of the strongest evidence for power line health risks by combining data from multiple studies. The 30% increased leukemia risk at just 2 milligauss is particularly significant because this exposure level occurs much farther from power lines than previously thought dangerous. What this means for you: many homes within several hundred feet of transmission lines could exceed 2 milligauss, especially those built before modern setback requirements. The consistency across studies that this analysis found makes the association harder to dismiss as coincidence, though the mechanism remains unclear.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's ELF exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: ELFCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (1997). Risks of leukaemia among residents close to high voltage transmission electric lines.
Show BibTeX
@article{risks_of_leukaemia_among_residents_close_to_high_voltage_transmission_electric_lines_ce1581,
  author = {Unknown},
  title = {Risks of leukaemia among residents close to high voltage transmission electric lines},
  year = {1997},
  doi = {10.1136/oem.54.9.625},
  
}
DOI: 10.1136/oem.54.9.625PubMed: 9423573

Quick Questions About This Study

The meta-analysis found increased leukemia risk starting at 2 milligauss magnetic field exposure, with a 30% higher risk (odds ratio of 1.3). Risk continued increasing at higher exposure levels of 3, 4, and 10 milligauss.
The analysis found increased leukemia risk for people living within 50 meters (164 feet) of high-voltage transmission lines of 49 kV and above. Risk was even higher within 25 meters (82 feet) of the lines.
This meta-analysis found increased leukemia risk for both adults and children living near high-voltage transmission lines. The 30% risk increase at 2 milligauss exposure applied to all age groups studied.
The meta-analysis examined high-voltage transmission lines of 49 kilovolts (kV) and above. These are the large transmission lines that carry electricity long distances, not the lower-voltage distribution lines serving neighborhoods.
The researchers noted consistency across multiple studies examining leukemia risk near power lines. This consistency strengthens the evidence for an association between magnetic field exposure and leukemia, making coincidence less likely as an explanation.