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DNA & Genetic Damage

Primary DNA Damage in Human Blood Lymphocytes Exposed In Vitro to 2450 MHz Radiofrequency Radiation.

No Effects Found

Vijayalaxmi, Leal BZ, Szilagyi M, Prihoda TJ, Meltz ML, · 2000

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This study found no DNA damage in human blood cells exposed to microwave-frequency radiation at levels similar to cell phone use.

Plain English Summary

Summary written for general audiences

Researchers exposed human blood cells to 2450 MHz radiofrequency radiation (the same frequency used in microwave ovens and some WiFi) for 2 hours to see if it would damage DNA. They found no evidence of DNA damage - the cells looked identical to unexposed cells, while cells exposed to ionizing radiation showed clear damage. This suggests that RF radiation at these levels doesn't break DNA strands in human immune cells.

Why This Matters

This study represents one data point in the ongoing debate about RF radiation's potential to cause DNA damage, a key concern since DNA breaks can theoretically lead to cancer. The 2.135 W/kg exposure level is roughly comparable to what your head absorbs during a long phone call, making these results directly relevant to everyday device use. However, it's important to note this was a short-term study using only one frequency and exposure duration. The science demonstrates that some studies have found DNA damage from RF radiation while others, like this one, have not. What this means for you is that the evidence remains mixed, and a single negative study doesn't settle the question of long-term safety.

Exposure Details

SAR
2.135 W/kg
Power Density
5 mW/cm²
Source/Device
2450 MHz

Exposure Context

This study used 5 mW/cm² for radio frequency:

This study used 2.135 W/kg for SAR (device absorption):

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 5 mW/cm²Extreme Concern - 1,000 µW/m²FCC Limit - 10M µW/m²Effects observed in the Extreme Concern range (Building Biology)This level is 5 times the FCC limit
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 2.45 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 2.45 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

The aim of this study is to investigate Primary DNA Damage in Human Blood Lymphocytes Exposed In Vitro to 2450 MHz Radiofrequency Radiation.

Human peripheral blood samples collected from three healthy human volunteers were exposed in vitro t...

At either time, the data indicated no significant differences between RF-radiation- and sham-exposed...

The conclusions were similar for each of the three different comet assay slide-processing schedules examined. In contrast, the response of lymphocytes exposed to ionizing radiation was significantly different from RF-radiation- and sham-exposed cells. Thus, under the experimental conditions tested, there is no evidence for induction of DNA single-strand breaks and alkali-labile lesions in human blood lymphocytes exposed in vitro to pulsed-wave 2450 MHz radiofrequency radiation, either immediately or at 4 h after exposure.

Cite This Study
Vijayalaxmi, Leal BZ, Szilagyi M, Prihoda TJ, Meltz ML, (2000). Primary DNA Damage in Human Blood Lymphocytes Exposed In Vitro to 2450 MHz Radiofrequency Radiation. Radiat Res 153(4):479-486, 2000.
Show BibTeX
@article{vijayalaxmi_2000_primary_dna_damage_in_3468,
  author = {Vijayalaxmi and Leal BZ and Szilagyi M and Prihoda TJ and Meltz ML and},
  title = {Primary DNA Damage in Human Blood Lymphocytes Exposed In Vitro to 2450 MHz Radiofrequency Radiation.},
  year = {2000},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/10761010/},
}
PubMed: 10761010

Cited By (72 papers)

View all 72 citing papers on Semantic Scholar

Quick Questions About This Study

A 2000 study found no DNA damage in human blood cells exposed to 2450 MHz radiation (the same frequency as WiFi and microwaves) for 2 hours. The cells showed no differences from unexposed cells, suggesting this radiation level doesn't break DNA strands in immune cells.
Research on 2450 MHz radiation (microwave oven frequency) showed no genetic damage to human lymphocytes after 2-hour exposure. Scientists found no DNA strand breaks or cellular damage, unlike cells exposed to ionizing radiation which showed clear genetic harm.
A laboratory study found 2450 MHz radiofrequency radiation caused no detectable harm to human immune cells (lymphocytes). After 2 hours of exposure, the cells appeared identical to unexposed cells with no DNA damage or structural changes observed.
Laboratory testing of human blood cells exposed to 2450 MHz RF radiation found no DNA strand breaks. Researchers used sensitive comet assays to detect genetic damage but found no differences between exposed and unexposed cells over multiple time periods.
A 2000 study testing 2450 MHz radiation on human blood cells found no DNA damage risks at the levels tested. The research showed no single-strand breaks or genetic lesions in immune cells, even after 2-hour exposures to this common device frequency.