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Long-term study in mice and rats at whole body exposure to cell phone radio frequency radiation (NTP study)

The National Toxicology Program (NTP) has published the results of a long-term study in mice and rats designed to identify the possible hazards of high whole-body exposure to cell phone radio frequency radiation. The Federal Office for Radiation Protection presents the results and evaluates them.

Article Technical statement of the Federal Office for Radiation Protection on the results of the NTP study

The NTP authors conclude that there is clear evidence (highest level of evidence) for the exposure-related occurrence of heart tumours as well as some evidence for the occurrence of brain tumours and diseases of the adrenal medulla in male rats. In contrast, the Federal Office for Radiation Protection, after careful analysis of the various results, sees indications but neither a clear nor some evidence for a carcinogenic effect at high whole-body exposures - which were clearly above the limit values. Methodological weaknesses and inconsistencies in the study results clearly limit the meaningfulness of the study.

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Article Annex 1: Study design and results of the first and second study phase

In the first phase, a five-day pilot study, the influence of different whole-body SARs on the body temperatures of young and adult B63F1 laboratory mice and young, adult, and pregnant Harlan Sprague-Dawley laboratory rats was investigated. In the second phase of the study young rats and mice were exposed at SAR values of 0, 3, 6, and 9 W/kg (rats) and 0, 5, 10, and 15 W/kg (mice) for 28 days.

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Article Annex 2: Study design and results of the NTP main study

Detailed presentation of the study design and the results from the NTP main study

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