National Toxicology Program (NTP) Radiofrequency radiation carcinogenesis in rats (NTP TR 595) and mice (NTP TR 596)

This study is now under peer review during March 26 to 28, 2018; the reports can be found here (NTP TR 595; rats) and here (NTP TR 596; mice). It has been able to submit comments and our views can be found here.

Our overall evaluation of levels of evidence of carcinogenic activity are:

Glioma: Clear evidence
Meningioma: Equivocal evidence
Vestibular schwannoma (acoustic neuroma): Clear evidence
Pituitary tumor (adenoma): Equivocal evidence
Thyroid cancer: Some evidence
Malignant lymphoma: Equivocal evidence
Skin (cutaneous tissue): Equivocal evidence
Multi-site carcinogen: Some evidence

Based on the IARC preamble to the monographs, RF radiation should be classified as Group 1: The agent is carcinogenic to humans.

’This category is used when there is sufficient evidence of carcinogenicity in humans. Exceptionally, an agent may be placed in this category when evidence of carcinogenicity in humans is less than sufficient but there is sufficient evidence of carcinogenicity in experimental animals and strong evidence in exposed humans that the agent acts through a relevant mechanism of carcinogenicity.’ (


3 thoughts on “National Toxicology Program (NTP) Radiofrequency radiation carcinogenesis in rats (NTP TR 595) and mice (NTP TR 596)

  1. Pingback: Report of final results regarding brain and heart tumors in Sprague-Dawley rats exposed from prenatal life until natural death to mobile phone radiofrequency field representative of a 1.8 GHz GSM base station environmental emission | Lennart Hardell

  2. Excellent, very welcome and important.

    I am sure you are preparing a new letter to WHO and IARC. In addition, I suggest you send it to major, if not all Mobile Phone producers. Especially, make sure that it does reach the leadership of Apple that has been systematically ignoring if not denying any harmful effect of cellphones and therefore has not hesitated to be a “market leader” regarding high SAR values of some iPhones.

    Will you issue a global press release by way of Reuters?

    Samsung has been applying their ingenious invention that directs about 80% of the radiation from the antenna away from the head, in some (like Galaxy Note 7s Edge), but surprisingly enough, not all of their models (just shielding does not help, the microwaves pass around the shield). I suggest you encourage them to apply it in all future models and mention them as an example for the industry to follow.

    Jaan Suurkula, M.D.

    • Thank you for your interest and comments. The NTP study has been covered by media in many countries, although not in Sweden. Industry is well aware of the results. IARC has been asked to re-evaluate the carcinogenicity of radiofrequency radiation and the response is due in the near future.


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