Effect of cell phone RFR on body temperature in rodents: Pilot studies of NTP's reverberation chamber exposure system

Authors: Wyde ME, Horn TL, Capstick MH, Ladbury JM, Koepke G, Wilson PF, Kissling GE, Stout MD, Kuster N, Melnick RL, Gauger J, Bucher JR, McCormick DL

Year: 2018 Apr

Category: Bioelectromagnetics

Journal: Bioelectromagnetics

Institution: National Toxicology Program

DOI: 10.1002/bem.22116

URL: https://www.ncbi.nlm.nih.gov/pubmed/29537695

Abstract

Overview

The study investigates the effects of radiofrequency radiation (RFR) from mobile phones on body temperature in rodents, assessing the impact across different ages, sizes, and pregnancy status.

Findings

  • Radiofrequency radiation (RFR) primarily causes heating which might lead to harmful biological outcomes.
  • Rodents of varying ages (young and old) along with pregnant rats were involved in short-term toxicity studies.
  • Exposure to Global System for Mobile Communication (GSM) and Code Division Multiple Access (CDMA) RFR showed species and age-dependent thermal effects.
  • Significant increases in body temperature were observed at Specific Absorption Rates (SARs) ≥6 W/kg, with lethal outcomes at higher exposures (≥10 W/kg).
  • Pregnant rats exhibited increased fetal resorptions at 12 W/kg GSM RFR, marking severe adverse reproductive effects.
  • The findings helped define SAR thresholds for safe exposure, guiding subsequent toxicology and carcinogenicity studies.

Conclusion

The study underscores the potential health risks associated with RFR exposure from mobile phones, particularly at high SAR levels. It highlights the need for regulations based on age, species, and physiological conditions to mitigate thermal and biological risks.

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