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

Influence of GSM Signals on Human Peripheral Lymphocytes: Study of Genotoxicity.

No Effects Found

Waldmann P, Bohnenberger S, Greinert R, Hermann-Then B, Heselich A, Klug SJ, Koenig J, Kuhr K, Kuster N, Merker M, Murbach M, Pollet D, Schadenboeck W, Scheidemann-Wesp U, Schwab B, Volkmer B, Weyer V, Blettner M. · 2013

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Cell phone radiation at levels up to five times the current safety limit caused no DNA damage in human blood cells during 28-hour exposure.

Plain English Summary

Summary written for general audiences

Researchers exposed human blood cells from 20 volunteers to cell phone radiation (1,800 MHz) for 28 hours at three different intensities and tested for DNA damage using multiple methods. The study found no evidence that the radiation caused genetic damage to the cells at any exposure level. This collaborative study across six independent laboratories used rigorous controls and blinded analysis to ensure reliable results.

Why This Matters

This study represents the kind of rigorous, multi-institutional research we need more of in EMF science. The researchers used exposure levels ranging from 0.2 to 10 W/kg - with the highest level being five times greater than the current SAR limit for cell phones (2 W/kg). What makes this study particularly credible is its design: six independent institutes, blinded analysis by three separate laboratories, and multiple validated tests for DNA damage. The science demonstrates that even at these elevated exposure levels, human lymphocytes showed no signs of genetic damage. However, it's important to note this was an acute exposure study lasting 28 hours, and the reality is that real-world cell phone use involves chronic, repeated exposures over years or decades. While these findings are reassuring for short-term genetic effects, they don't address the broader questions about long-term health impacts from daily EMF exposure.

Exposure Details

SAR
0.2, 2, 10 W/kg
Source/Device
1,800 MHz
Exposure Duration
28 hours

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 0.2, 2, 10 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Extreme Concern range (Building Biology)FCC limit is 8 times higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1.80 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1.80 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

In the present study, a possible genotoxic effect of RF EMF (GSM, 1,800 MHz) in human lymphocytes was investigated by a collaboration of six independent institutes (institutes a, b, c, d, e, h).

Peripheral blood of 20 healthy, nonsmoking volunteers of two age groups (10 volunteers 16–20 years o...

It was ascertained that only outcomes with a significant SAR trend found by at least two of three an...

In conclusion, the results show no evidence of a genotoxic effect induced by RF EMF (GSM, 1,800 MHz).

Cite This Study
Waldmann P, Bohnenberger S, Greinert R, Hermann-Then B, Heselich A, Klug SJ, Koenig J, Kuhr K, Kuster N, Merker M, Murbach M, Pollet D, Schadenboeck W, Scheidemann-Wesp U, Schwab B, Volkmer B, Weyer V, Blettner M. (2013). Influence of GSM Signals on Human Peripheral Lymphocytes: Study of Genotoxicity. Radiat Res (2013) 179 (2): 243–253. https://doi.org/10.1667/RR2914.1.
Show BibTeX
@article{p_2013_influence_of_gsm_signals_2934,
  author = {Waldmann P and Bohnenberger S and Greinert R and Hermann-Then B and Heselich A and Klug SJ and Koenig J and Kuhr K and Kuster N and Merker M and Murbach M and Pollet D and Schadenboeck W and Scheidemann-Wesp U and Schwab B and Volkmer B and Weyer V and Blettner M.},
  title = {Influence of GSM Signals on Human Peripheral Lymphocytes: Study of Genotoxicity.},
  year = {2013},
  
  url = {https://meridian.allenpress.com/radiation-research/article-abstract/179/2/243/150207/Influence-of-GSM-Signals-on-Human-Peripheral},
}

Quick Questions About This Study

A 2013 multi-laboratory study exposed human blood cells from 20 volunteers to 1800 MHz GSM radiation for 28 hours and found no evidence of genetic damage. The research tested multiple DNA damage markers across six independent labs using rigorous controls and blinded analysis.
Research exposing human lymphocytes to 1800 MHz cell phone radiation intermittently for 28 hours found no DNA damage at any intensity level tested. This study used blood samples from 20 volunteers and multiple detection methods to assess genetic safety.
Yes, multi-laboratory studies provide stronger evidence. The 2013 GSM radiation study used six independent labs analyzing the same samples with blinded methods, eliminating bias and confirming that 1800 MHz exposure caused no reproducible genetic damage in human blood cells.
The 2013 study tested human lymphocytes at three different SAR (Specific Absorption Rate) intensities of 1800 MHz GSM radiation over 28 hours. None of the exposure levels produced significant DNA damage trends when analyzed across multiple independent laboratories.
Yes, blinded analysis eliminates researcher bias. The 2013 lymphocyte study used blinded methods across six labs, where researchers didn't know which samples were exposed to 1800 MHz radiation. This rigorous approach confirmed no genetic damage occurred from the exposures.