8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.
Shield Your Body
Cancer & Tumors

A new electromagnetic exposure metric: High frequency voltage transients associated with increased cancer incidence in teachers in a california school

Bioeffects Seen

Authors not listed · 2008

Share:

High frequency electrical transients in school wiring correlated with 2.78 times higher teacher cancer rates.

Plain English Summary

Summary written for general audiences

Researchers investigated unusually high cancer rates among teachers at a California middle school, finding 16 teachers developed 18 cancers between 1988-2005. The study discovered a strong correlation between cancer incidence and high frequency voltage transients (electrical noise) on classroom wiring, with teachers facing 2.78 times the expected cancer rate overall.

Why This Matters

This study represents a breakthrough in EMF research by identifying a previously overlooked exposure source that may be far more dangerous than traditional measurements suggest. While scientists have long focused on magnetic fields from power lines, this research points to high frequency voltage transients - the electrical 'noise' created by modern electronics and energy-efficient devices - as a potential universal carcinogen. The reality is that these transients are ubiquitous in modern buildings, created by everything from fluorescent lights to computer equipment. What makes this study particularly compelling is the dose-response relationship: teachers with higher cumulative exposure to these transients had progressively higher cancer rates. The 64% attributable risk suggests that nearly two-thirds of the excess cancers in this population were linked to this electrical pollution. This finding challenges our entire approach to EMF safety standards, which currently ignore high frequency transients altogether.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 60 Hz + high frequency transients exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 60 Hz + high frequency transientsCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (2008). A new electromagnetic exposure metric: High frequency voltage transients associated with increased cancer incidence in teachers in a california school.
Show BibTeX
@article{a_new_electromagnetic_exposure_metric_high_frequency_voltage_transients_associated_with_increased_cancer_incidence_in_teachers_in_a_california_school_ce1419,
  author = {Unknown},
  title = {A new electromagnetic exposure metric: High frequency voltage transients associated with increased cancer incidence in teachers in a california school},
  year = {2008},
  doi = {10.1002/ajim.20598},
  
}
DOI: 10.1002/ajim.20598PubMed: 18512243

Quick Questions About This Study

High frequency voltage transients are electrical 'noise' or interference on power lines caused by modern electronic devices like computers, fluorescent lights, and energy-efficient equipment. Unlike standard 60 Hz electricity, these transients occur at much higher frequencies and weren't measured in traditional EMF studies.
Each single year of employment at La Quinta Middle School increased a teacher's cancer risk by 21%. This dose-response relationship suggests cumulative exposure effects, with longer-serving teachers facing progressively higher cancer rates from the electrical environment.
Malignant melanoma showed a 9.8 times higher rate than expected, thyroid cancer was 13.3 times higher, and uterine cancer was 9.2 times higher. These dramatic increases in specific cancer types suggest a common environmental cause rather than coincidence.
No, standard 60 Hz magnetic fields showed no association with cancer incidence in this teacher population. Only the high frequency voltage transients measured with specialized Graham/Stetzer meters correlated with increased cancer rates, challenging conventional EMF safety focus.
The study calculated that 64% of the excess cancer risk was attributable to high frequency voltage transient exposure. This means nearly two-thirds of the elevated cancer cases in teachers could be linked to this specific form of electrical pollution.