GSM and DCS Wireless Communication Signals: Combined Chronic Toxicity/Carcinogenicity Study in the Wistar Rat

Paul Smith, Niels Kuster, Sven Ebert, and Hans-Jörg Chevalier, in Radiation Research, Volume 168, Issue 4, pp. 480–492, October 2007

A total of 1170 rats comprised of 65 male and 65 female Han Wistar rats per group were exposed for 2 h/day, 5 days/ week for up to 104 weeks to GSM or DCS wireless communication signals at three nominal SARs of 0.44, 1.33 and 4.0 W/kg as well as sham, with cage controls. A preliminary study confirmed that the highest exposure level was below that which was capable of causing a measurable increase in the core temperature of the rat. Evaluations during the study included mortality rate, clinical signs, recording of palpable masses, body weight, food consumption, ophthalmoscopic examination, and clinical pathological investigations. No adverse response to the wireless communication signals was observed with respect to incidence, number, multiplicity, or latency of neoplasms.

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