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Cancer & Tumors

Exposure to power-frequency magnetic fields and the risk of childhood cancer. UK Childhood Cancer Study Investigators

No Effects Found

Authors not listed · 1999

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Major UK study of 2,226 children found no cancer risk from power line magnetic fields.

Plain English Summary

Summary written for general audiences

The UK Childhood Cancer Study examined 2,226 children to determine if power line magnetic fields increase cancer risk. Researchers found no increased risk of childhood leukemia, brain tumors, or other cancers from magnetic field exposure. This large population study contradicts earlier research suggesting links between power line EMF and childhood cancer.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 50-60 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 50-60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale
Cite This Study
Unknown (1999). Exposure to power-frequency magnetic fields and the risk of childhood cancer. UK Childhood Cancer Study Investigators.
Show BibTeX
@article{exposure_to_power_frequency_magnetic_fields_and_the_risk_of_childhood_cancer_uk_childhood_cancer_study_investigators_ce1552,
  author = {Unknown},
  title = {Exposure to power-frequency magnetic fields and the risk of childhood cancer. UK Childhood Cancer Study Investigators},
  year = {1999},
  
  
}
PubMed: 10622294

Quick Questions About This Study

The study included 2,226 matched pairs of children across England, Wales, and Scotland. Researchers measured actual magnetic field levels in homes and schools, making it one of the largest and most comprehensive studies of childhood cancer and power line EMF exposure.
Researchers classified exposures above 0.2 microT as higher exposure levels. Only 17 children (less than 0.4%) had exposures above 0.4 microT. These levels are much lower than magnetic fields produced by common household appliances at close range.
No, the study found no increased leukemia risk from power line magnetic fields. Children with higher exposures actually showed slightly lower odds ratios: 0.92 for acute lymphoblastic leukemia and 0.90 for all leukemia types combined, suggesting no harmful association.
Researchers took actual magnetic field measurements in children's homes and schools, then adjusted for historical power line loads and appliance fields. This approach provided much more accurate exposure estimates than previous studies that relied on distance from power lines.
The study examined all childhood cancers including acute lymphoblastic leukemia, all leukemia types, central nervous system tumors, and other malignant diseases. None showed increased risk from power line magnetic field exposure, with all odds ratios below 1.0.