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Effects of chronic exposure to radiofrequency electromagnetic fields on energy balance in developing rats.

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Pelletier A, Delanaud S, Décima P, Thuroczy G, de Seze R, Cerri M, Bach V, Libert JP, Loos N. · 2013

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Cell phone-level RF radiation disrupted sleep, appetite, and blood vessel function in developing rats after 5 weeks of exposure.

Plain English Summary

Summary written for general audiences

French researchers exposed young rats to cell phone radiation (900 MHz) for five weeks and found disrupted sleep patterns, increased daytime eating, and impaired blood vessel function affecting temperature control. These changes suggest chronic RF exposure interferes with basic biological processes controlling energy use.

Why This Matters

This study reveals something particularly concerning about radiofrequency exposure during development. The researchers used 900 MHz radiation at 1 V/m, which is well within the range of everyday cell phone and wireless exposures. What makes these findings significant is that they demonstrate RF radiation can disrupt multiple interconnected biological systems simultaneously - sleep regulation, appetite control, and blood vessel function - all of which are critical for normal growth and development. The 42% increase in REM sleep episodes and the measurable changes in food intake aren't subtle effects you might dismiss as statistical noise. They represent substantial alterations in basic physiological processes. The fact that these changes occurred in developing animals is especially relevant, as children and adolescents may be more vulnerable to RF effects during critical growth periods when their biological systems are still maturing.

Exposure Details

Electric Field
1 V/m
Source/Device
900 MHz
Exposure Duration
5 weeks

Exposure Context

This study used 1 V/m for electric fields:

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.

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

We examined the effects of chronic RF-EMF exposure (900 MHz, 1 V m(-1)) on the main functions involved in body energy homeostasis (feeding behaviour, sleep and thermoregulatory processes).

Thirteen juvenile male Wistar rats were exposed to continuous RF-EMF for 5 weeks at 24 °C of air te...

We showed that the frequency of rapid eye movement sleep episodes was greater in the RF-EMF-exposed ...

Our results show that RF-EMF exposure can induce energy-saving processes without strongly disturbing the overall sleep pattern.

Cite This Study
Pelletier A, Delanaud S, Décima P, Thuroczy G, de Seze R, Cerri M, Bach V, Libert JP, Loos N. (2013). Effects of chronic exposure to radiofrequency electromagnetic fields on energy balance in developing rats. Environ Sci Pollut Res Int. 20(5):2735-2746, 2013.
Show BibTeX
@article{a_2013_effects_of_chronic_exposure_1265,
  author = { Pelletier A and Delanaud S and Décima P and Thuroczy G and de Seze R and Cerri M and Bach V and Libert JP and Loos N.},
  title = {Effects of chronic exposure to radiofrequency electromagnetic fields on energy balance in developing rats.},
  year = {2013},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/23143821/},
}
PubMed: 23143821

Cited By (30 papers)

Quick Questions About This Study

Yes, a 2013 French study found that young rats exposed to 900 MHz cell phone radiation for five weeks experienced 42% more REM sleep episodes at normal temperature and 32% more at warmer temperatures, indicating disrupted sleep architecture.
Research shows that young rats exposed to 900 MHz radiation for five weeks increased their daytime food intake by 0.22 grams per hour compared to unexposed controls, suggesting chronic RF exposure may disrupt normal feeding patterns.
A 2013 study found that young rats exposed to 900 MHz radiation showed peripheral vasoconstriction, with tail temperature dropping 1.21°C compared to controls. This blood vessel constriction was confirmed using the drug prazosin.
French researchers discovered that developing rats exposed to 900 MHz radiation for five weeks showed impaired temperature regulation through restricted blood vessel function, potentially limiting the body's ability to cool itself effectively during different sleep stages.
A five-week exposure study revealed that 900 MHz radiation triggered energy-saving processes in developing rats, including increased food intake, disrupted sleep patterns, and vasoconstriction that restricts body cooling while energy consumption rises.