6,486 Studies Reviewed. 85.2% of Original Studies Found Biological Effects. The Evidence is Clear.
Shield Your Body

Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.

Cancer & Tumors

Exposure to extremely low frequency magnetic fields has no effect on growth rate or clonogenic potential of multipotential haemopoietic progenitor cells

No Effects Found

Authors not listed · 1996

Share:

Power line frequency magnetic fields showed no direct effects on blood stem cell growth in laboratory conditions.

Plain English Summary

Summary written for general audiences

Researchers exposed blood stem cells to extremely low frequency magnetic fields similar to those from power lines for up to 21 days. They found no changes in cell growth rate or the cells' ability to form colonies. This suggests power line EMF may not directly promote blood cancer development in laboratory conditions.

Why This Matters

This study provides important context for the childhood leukemia debate surrounding power lines. While epidemiological studies have suggested increased leukemia risk near high-voltage lines, this laboratory research found no direct effects on blood stem cells - the very cells that become cancerous in leukemia. The researchers tested multiple EMF conditions including nulled fields and calcium ion cyclotron resonance at 50 Hz, exposing cells for up to three weeks. However, laboratory studies can't capture the full complexity of how EMF might interact with other environmental factors or genetic susceptibilities over years of exposure. The reality is that cancer development is a multi-step process, and EMF effects might be too subtle to detect in short-term cell culture studies, even when using the most relevant cell types.

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 (1996). Exposure to extremely low frequency magnetic fields has no effect on growth rate or clonogenic potential of multipotential haemopoietic progenitor cells.
Show BibTeX
@article{exposure_to_extremely_low_frequency_magnetic_fields_has_no_effect_on_growth_rate_or_clonogenic_potential_of_multipotential_haemopoietic_progenitor_cells_ce1593,
  author = {Unknown},
  title = {Exposure to extremely low frequency magnetic fields has no effect on growth rate or clonogenic potential of multipotential haemopoietic progenitor cells},
  year = {1996},
  doi = {10.3109/08977199609003222},
  
}
DOI: 10.3109/08977199609003222PubMed: 8919028

Quick Questions About This Study

This study found no evidence that 50 Hz magnetic fields from power lines directly stimulate blood stem cell proliferation or colony formation, even under suboptimal growth conditions designed to make cells more sensitive to external influences.
It's a theoretical mechanism where 50 Hz magnetic fields might affect calcium ions in cells by matching their natural resonant frequency. This study tested this specific condition but found no effects on blood stem cells.
Researchers exposed multipotential blood stem cells for 1, 4, 7, and 21 days to various magnetic field conditions, including nulled fields and 6 microtesla vertical fields at 50 Hz frequency.
FDCP-mix(A4) cells are multipotential progenitor cells that can differentiate into various blood cell types, making them a relevant model for studying how EMF might affect early blood cell development and leukemia risk.
Researchers used suboptimal conditions because stressed cells might be more susceptible to EMF effects. Testing both conditions helps determine if magnetic fields only affect cells under specific circumstances or stress states.