8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.
Shield Your Body
DNA & Genetic Damage112 citations

Radiofrequency electromagnetic fields (UMTS, 1,950 MHz) induce genotoxic effects in vitro in human fibroblasts but not in lymphocytes.

Bioeffects Seen

Schwarz C, Kratochvil E, Pilger A, Kuster N, Adlkofer F, Rüdiger HW · 2008

View Original Abstract
Share:

3G phone radiation caused DNA damage in human cells at levels 20-40 times below current safety limits.

Plain English Summary

Summary written for general audiences

Researchers exposed human cells to 3G mobile phone radiation (UMTS at 1,950 MHz) at levels well below safety limits to test for DNA damage. They found that certain cells called fibroblasts showed significant genetic damage after exposure, while immune cells called lymphocytes were unaffected. This suggests that 3G radiation can cause DNA damage in some human cell types even at supposedly safe exposure levels.

Why This Matters

This research highlights a critical gap in how we evaluate EMF safety. The study used exposure levels of 0.05 and 0.1 W/kg - both far below the 2 W/kg safety limit set by regulators. Yet even at these low levels, researchers documented measurable DNA damage in human fibroblasts within 8-24 hours. What makes this particularly significant is that different cell types responded differently to the same exposure, with fibroblasts showing damage while lymphocytes remained unaffected. This challenges the one-size-fits-all approach to EMF safety standards and suggests that some tissues may be more vulnerable than others. The reality is that your phone operates at these same frequencies and power levels during normal use, making this laboratory finding directly relevant to everyday exposure.

Exposure Details

SAR
0.05, 0.1 W/kg
Source/Device
UMTS, 1,950 MHz
Exposure Duration
24 h, 8h

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 0.05, 0.1 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Severe Concern rangeFCC limit is 32x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1.95 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1.95 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

Universal Mobile Telecommunication System (UMTS) was recently introduced as the third generation mobile communication standard in Europe. This was done without any information on biological effects and genotoxic properties of these particular high-frequency electromagnetic fields. This is discomforting, because genotoxic effects of the second generation standard Global System for Mobile Communication have been reported after exposure of human cells in vitro.

Human cultured fibroblasts of three different donors and three different short-term human lymphocyte...

UMTS exposure increased the CTF and induced centromere-negative micronuclei (MN) in human cultured f...

UMTS exposure may cause genetic alterations in some but not in all human cells in vitro.

Cite This Study
Schwarz C, Kratochvil E, Pilger A, Kuster N, Adlkofer F, Rüdiger HW (2008). Radiofrequency electromagnetic fields (UMTS, 1,950 MHz) induce genotoxic effects in vitro in human fibroblasts but not in lymphocytes. Int Arch Occup Environ Health. 81(6):755-767, 2008.
Show BibTeX
@article{c_2008_radiofrequency_electromagnetic_fields_umts_1314,
  author = {Schwarz C and Kratochvil E and Pilger A and Kuster N and Adlkofer F and Rüdiger HW},
  title = {Radiofrequency electromagnetic fields (UMTS, 1,950 MHz) induce genotoxic effects in vitro in human fibroblasts but not in lymphocytes. },
  year = {2008},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/18278508/},
}
PubMed: 18278508

Cited By (112 papers)

View all 112 citing papers on Semantic Scholar

Quick Questions About This Study

Yes, 3G UMTS radiation at 1,950 MHz caused significant DNA damage in human fibroblast cells at levels well below current safety limits. A 2008 study found genetic alterations occurred at radiation levels as low as 0.05 W/kg after 24 hours of exposure, demonstrating dose and time-dependent effects.
Different cell types respond differently to radiofrequency radiation. The 2008 study found human fibroblasts developed significant genetic damage from 1,950 MHz UMTS exposure, while lymphocytes showed no effects. This suggests cellular vulnerability to RF radiation varies based on cell type and function.
DNA damage from 1,950 MHz UMTS radiation occurs at SAR levels as low as 0.05 W/kg after 24 hours. At 0.1 W/kg, genetic damage appeared even faster - within 8-12 hours of exposure. These levels are well below current safety limits for mobile phones.
3G UMTS radiation at 1,950 MHz can cause genetic damage in human fibroblasts within 8-12 hours at 0.1 W/kg exposure levels. At lower levels (0.05 W/kg), significant DNA damage occurs after 24 hours, showing both time and dose-dependent cellular effects.
UMTS radiation at 1,950 MHz increases chromosomal tail formation (CTF) and creates centromere-negative micronuclei in human fibroblasts. These are specific indicators of DNA breakage and chromosomal damage that occur in a dose and time-dependent manner during cell division.