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DNA & Genetic Damage

DNA Damage in human leukocytes after acute in vitro exposure to a 1.9 GHz pulse-modulated radiofrequency field.

No Effects Found

McNamee JP, Bellier PV, Gajda GB, Lavallee BF, Lemay EP, Marro L, Thansandote A. · 2002

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This study found no DNA damage from 2-hour exposure to cell phone-type radiation, even at levels 5 times higher than typical phone limits.

Plain English Summary

Summary written for general audiences

Canadian researchers exposed human white blood cells to 1.9 GHz radiofrequency radiation (similar to cell phone signals) for 2 hours at various power levels up to 10 W/kg. They found no evidence of DNA damage using two different laboratory tests that measure genetic harm. This suggests that short-term exposure to this type of RF radiation at these levels does not break DNA strands in immune cells.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1.90 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1.90 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

The study examined exposure from: 1.9 GHz Duration: 2 h

Study Details

The aim of the study is to observe DNA Damage in human leukocytes after acute in vitro exposure to a 1.9 GHz pulse-modulated radiofrequency field.

Blood cultures from human volunteers were exposed to an acute 1.9 GHz pulse-modulated radiofrequency...

When compared to the sham-treated controls, no evidence of increased primary DNA damage was detected...

These results do not support the hypothesis that acute, nonthermalizing 1.9 GHz pulse-modulated RF-field exposure causes DNA damage in cultured human leukocytes.

Cite This Study
McNamee JP, Bellier PV, Gajda GB, Lavallee BF, Lemay EP, Marro L, Thansandote A. (2002). DNA Damage in human leukocytes after acute in vitro exposure to a 1.9 GHz pulse-modulated radiofrequency field. Radiat Res 158(4):534-537, 2002.
Show BibTeX
@article{jp_2002_dna_damage_in_human_2923,
  author = {McNamee JP and Bellier PV and Gajda GB and Lavallee BF and Lemay EP and Marro L and Thansandote A.},
  title = {DNA Damage in human leukocytes after acute in vitro exposure to a 1.9 GHz pulse-modulated radiofrequency field.},
  year = {2002},
  
  url = {https://meridian.allenpress.com/radiation-research/article-abstract/158/4/534/331903/DNA-Damage-in-Human-Leukocytes-after-Acute-In},
}

Quick Questions About This Study

No, a 2002 Canadian study found no DNA damage in human white blood cells exposed to 1.9 GHz radiofrequency radiation for 2 hours at power levels up to 10 W/kg. Two different laboratory tests confirmed no genetic harm occurred in immune cells.
Research shows 2-hour exposure to 1.9 GHz pulse-modulated RF fields at levels up to 10 W/kg does not cause genetic damage. Canadian scientists found no DNA breaks or chromosomal abnormalities in human leukocytes using sensitive laboratory detection methods.
A 2002 study tested pulse-modulated 1.9 GHz signals (similar to early cell phones) and found no DNA damage in human immune cells. The research specifically examined pulsed RF fields but cannot directly compare safety to continuous signals.
No, comet assay testing revealed no primary DNA damage in human leukocytes exposed to 1.9 GHz radiation. Canadian researchers used this sensitive laboratory technique alongside micronucleus testing to detect genetic harm, finding no significant effects at any power level tested.
Researchers tested various specific absorption rate (SAR) levels up to 10 W/kg with 1.9 GHz pulse-modulated radiation exposure. None of the SAR levels tested caused detectable DNA damage or chromosomal abnormalities in cultured human white blood cells.