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Immune System

Effects of In Vivo Exposure to GSM-Modulated 900 MHz Radiation on Mouse Peripheral Lymphocytes.

No Effects Found

Gatta L, Pinto R, Ubaldi V, Pace L, Galloni P, Lovisolo GA, Marino C, Pioli C. · 2003

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Cell phone radiation at typical exposure levels didn't impair mouse immune system function, suggesting minimal risk to human immunity.

Plain English Summary

Summary written for general audiences

Researchers exposed mice to cell phone radiation (900 MHz GSM) for 2 hours daily over 1-4 weeks to see if it would affect their immune system cells in the spleen. They found no significant changes in the numbers or types of immune cells, and the cells responded normally when stimulated. The study concluded that cell phone radiation at these levels is unlikely to cause clinically relevant immune system problems.

Why This Matters

This study provides reassuring evidence that GSM cell phone radiation at 1-2 W/kg SAR levels doesn't substantially impair immune function in mice. The exposure levels tested are comparable to what you might experience during extended phone calls held close to your body. What makes this research particularly valuable is its comprehensive approach - the researchers didn't just count immune cells, they actually tested whether those cells could function properly when challenged. The brief increase in one immune signaling molecule (interferon-gamma) after one week that disappeared with longer exposure suggests the immune system may initially respond to RF radiation as a mild stressor but then adapts. While this single study shouldn't be considered definitive, it adds to a growing body of evidence suggesting that typical cell phone exposures don't severely compromise immune function.

Exposure Details

SAR
1 or 2 W/kg
Source/Device
900 MHz
Exposure Duration
2 h/day for 1, 2 or 4 weeks

Exposure Context

This study used 1 or 2 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: 1 or 2 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Extreme Concern range (Building Biology)FCC limit is 2 times higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 900 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 900 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

The aim of this study was to evaluate whether daily whole-body exposure to 900 MHz GSM-modulated radiation could affect spleen lymphocytes.

C57BL/6 mice were exposed 2 h/day for 1, 2 or 4 weeks in a TEM cell to an SAR of 1 or 2 W/kg. Untrea...

The number of spleen cells, the percentages of B and T cells, and the distribution of T-cell subpopu...

This suggests that the immune system might have adapted to RF radiation as it does with other stressing agents. All together, our in vivo data indicate that the T- and B-cell compartments were not substantially affected by exposure to RF radiation and that a clinically relevant effect of RF radiation on the immune system is unlikely to occur.

Cite This Study
Gatta L, Pinto R, Ubaldi V, Pace L, Galloni P, Lovisolo GA, Marino C, Pioli C. (2003). Effects of In Vivo Exposure to GSM-Modulated 900 MHz Radiation on Mouse Peripheral Lymphocytes. Radiat Res. 160(5):600-605, 2003.
Show BibTeX
@article{l_2003_effects_of_in_vivo_3037,
  author = {Gatta L and Pinto R and Ubaldi V and Pace L and Galloni P and Lovisolo GA and Marino C and Pioli C.},
  title = {Effects of In Vivo Exposure to GSM-Modulated 900 MHz Radiation on Mouse Peripheral Lymphocytes.},
  year = {2003},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/14565821/},
}
PubMed: 14565821

Cited By (54 papers)

View all 54 citing papers on Semantic Scholar

Quick Questions About This Study

No, 900 MHz GSM radiation did not significantly affect mouse spleen immune cells. A 2003 study exposed mice to cell phone radiation for 2 hours daily over 1-4 weeks and found no changes in immune cell numbers, types, or normal responses when stimulated.
Two hours of daily 900 MHz radiation exposure did not damage T cells in mice. The study found T-cell numbers, CD4 and CD8 subpopulations, and their ability to proliferate and produce cytokines remained normal after 1-4 weeks of exposure.
No, 1-2 W/kg SAR exposure did not weaken B cell function in mice. B cells maintained normal numbers and responded normally to stimulation, showing no clinically relevant immune system impairment from cell phone radiation at these power levels.
IFN-gamma production temporarily increased after 1 week of 900 MHz exposure at 1-2 W/kg, but this effect disappeared with longer exposure periods of 2-4 weeks, suggesting the immune system adapted to the radiation.
Four weeks of GSM radiation exposure is unlikely to be clinically dangerous for immunity. The study concluded that T and B cell compartments were not substantially affected and clinically relevant immune system effects are unlikely to occur.