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Cancer & Tumors

Childhood cancer in relation to indicators of magnetic fields from ground current sources

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Authors not listed · 1995

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Children in homes with metal plumbing had up to 4 times higher cancer risk from ground current magnetic fields.

Plain English Summary

Summary written for general audiences

This 1995 Denver study examined childhood cancer risk in homes with different plumbing types. Children living in homes with conductive metal plumbing (which can carry ground currents that create magnetic fields) had 72% higher cancer risk, rising to 200% higher risk in families who hadn't moved. The study found that specific magnetic field patterns indicating ground currents were associated with 4 times higher cancer risk.

Why This Matters

This research reveals a troubling connection between residential electrical systems and childhood cancer that most families never consider. Ground currents flowing through metal plumbing create magnetic field exposures that can be significantly higher than typical household levels. What makes this study particularly compelling is how it identified specific magnetic field characteristics (nonvertical orientation and above-median intensity) that showed much stronger cancer associations than simple field strength measurements. The science demonstrates that our homes' electrical infrastructure can create hidden EMF exposures through unexpected pathways. This finding was replicated in adult leukemia cases in Seattle, suggesting the pattern extends beyond childhood cancers. The reality is that many homes built before modern electrical codes may have these conductive plumbing configurations, potentially exposing millions of families to elevated magnetic fields from ground currents without their knowledge.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (1995). Childhood cancer in relation to indicators of magnetic fields from ground current sources.
Show BibTeX
@article{childhood_cancer_in_relation_to_indicators_of_magnetic_fields_from_ground_current_sources_ce1599,
  author = {Unknown},
  title = {Childhood cancer in relation to indicators of magnetic fields from ground current sources},
  year = {1995},
  doi = {10.1002/BEM.2250160204},
  
}
DOI: 10.1002/BEM.2250160204PubMed: 7612030

Quick Questions About This Study

Yes, this study found children in homes with conductive metal plumbing had 72% higher cancer risk, likely due to ground currents flowing through the pipes creating magnetic field exposure throughout the home.
Ground currents are electrical currents that flow through metal plumbing when it connects neighboring houses' electrical grounding systems, creating an unintended pathway that generates magnetic fields inside homes with conductive water pipes.
Children who stayed in the same home showed 200% higher cancer risk compared to 72% for all children, suggesting longer exposure duration to ground current magnetic fields increases health risks significantly.
Magnetic fields with nonvertical orientation less than 55 degrees from horizontal, combined with above-median intensity, showed 4 times higher cancer risk compared to typical vertical magnetic field patterns from overhead sources.
Yes, the same magnetic field pattern associated with ground currents was also linked to adult leukemia in an independent Seattle study, confirming this isn't limited to childhood cancers in Denver.