NTP Technical Report on the Toxicology and Carcinogenesis Studies: GSM- and CDMA-modulated Cell Phone RFR, NTP TR 595
This NTP technical report describes long-term rat studies exposing animals to 900 MHz GSM and CDMA-modulated radiofrequency radiation at whole-body SAR levels of 0, 1.5, 3, and 6 W/kg, including exposure beginning before birth. The abstract reports NTP concluded there was "clear evidence" for malignant schwannoma of the heart in male rats and "some evidence" for malignant gliomas in male rat brains. It also notes pilot work indicating <1°C core temperature increase at 6 W/kg and states the lowest exposure level (1.5 W/kg) was selected as close to the U.S. device limit (with different measurement contexts).
Key points
- The study exposed rats to 900 MHz GSM and CDMA-modulated signals at 0, 1.5, 3, and 6 W/kg whole-body SAR.
- Exposure reportedly began before birth and continued for a long duration (2-year studies are referenced).
- NTP classified malignant schwannoma of the heart in male rats as "clear evidence" in this report.
- NTP classified malignant gliomas in male rat brains as "some evidence" and the abstract provides GSM male rat tumor counts across dose groups.
- Pilot work is described as showing 6 W/kg increased core temperature by less than 1°C.
- The abstract states the lowest exposure level (1.5 W/kg) was chosen as close to the U.S. cell phone SAR limit of 1.6 W/kg, while noting the limits are not the same measurement.
- The abstract emphasizes that tumor counts do not increase monotonically with dose in the provided GSM male rat brain lesion numbers.
Referenced studies & papers
Relevant papers in OpenMel
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AI-generated summaries may be incomplete or incorrect. This content is for informational purposes only and is not medical advice.
AI-generated summaries may be incomplete or incorrect. This content is for informational purposes only and is not medical advice.
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