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Residential and occupational exposures to 50-Hz magnetic fields and breast cancer in women: a population-based study

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Authors not listed · 2004

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Women living near high-voltage power lines showed 58% higher breast cancer rates in this major Norwegian population study.

Plain English Summary

Summary written for general audiences

Norwegian researchers studied women living near high-voltage power lines and found those exposed to 50-Hz magnetic fields had a 58% increased risk of breast cancer compared to unexposed women. The study tracked over 50,000 women for up to 16 years, making it one of the largest investigations of power line EMF and breast cancer risk.

Why This Matters

This Norwegian study adds significant weight to concerns about power line EMF exposure and women's health. A 58% increased breast cancer risk is substantial - comparable to some established risk factors like late menopause or hormone replacement therapy. What makes this research particularly compelling is its size and methodology: tracking real women in their actual homes near power lines, not laboratory estimates. The science demonstrates that living near high-voltage lines exposes you to continuous 50-Hz magnetic fields, the same frequency that powers your home but at much higher intensities. While your household appliances produce brief, localized EMF spikes, power lines create sustained exposure throughout your living space. The reality is that millions of homes worldwide sit within EMF zones of transmission lines, yet this health risk remains largely unaddressed by public health authorities.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 50 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 50 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (2004). Residential and occupational exposures to 50-Hz magnetic fields and breast cancer in women: a population-based study.
Show BibTeX
@article{residential_and_occupational_exposures_to_50_hz_magnetic_fields_and_breast_cancer_in_women_a_population_based_study_ce1485,
  author = {Unknown},
  title = {Residential and occupational exposures to 50-Hz magnetic fields and breast cancer in women: a population-based study},
  year = {2004},
  doi = {10.1093/AJE/KWH116},
  
}

Quick Questions About This Study

Yes, this Norwegian study found women exposed to 50-Hz magnetic fields from high-voltage power lines had a 58% increased risk of developing breast cancer compared to unexposed women.
The study followed over 50,000 Norwegian women living near high-voltage transmission lines, tracking them for up to 16 years to assess breast cancer development rates.
Power lines emit 50-Hz magnetic fields in Europe and 60-Hz in North America. This study specifically examined 50-Hz exposure from Norwegian transmission lines near residential areas.
Women with the highest occupational EMF exposure showed a 13% increased breast cancer risk, though this was not statistically significant unlike the residential power line exposure.
Power lines create continuous 50-Hz magnetic field exposure throughout your home, while household appliances produce the same frequency but only during use and in localized areas.