World Health Organization International Agency for Research on Cancer

In 2011, the World Health Organization International Agency for Research on Cancer (WHO/IARC)  classified wireless radiation which technically is radiofrequency electromagnetic fields as possibly carcinogenic to humans (Group 2B), based on an increased risk for glioma, a malignant type of brain cancer1, associated with wireless phone use” as stated in their press release.

“Given the potential consequences for public health of this classification and findings, it is important that additional research be conducted into the long‐ term, heavy use of mobile phones. Pending the availability of such information, it is important to take pragmatic measures to reduce exposure such as hands‐free devices or texting, stated Christopher Wild, Director of International Agency for Research on Cancer

Due to new human and animal studies that found increased cancer risk, the WHO/IARC advisory committee released a 2020 report  recommending wireless radiation be re-evaluated by 2024 as a  “high priority.”  So far, the WHO IARC expert group has not convened to re-examine the issue and thus,  at this time there has been no new determination by the WHO/IARC. 


Today, several of the scientists who were invited experts to the WHO IARC working group in 2011, are speaking out with their new opinion that the scientific evidence has substantially increased to where the determination of “possibly carcinogenic” is no longer sufficient. They state that the weight of evidence is substantial enough to conclude that cell phone radiation is a probable and /or confirmed cause of human cancer.(Scientific research includes Miller et al 2018, Peleg et al 2022, Carlberg and Hardell 2017, Belpomme et al 2018).

Scientists of the World Health Organization International Agency for Research on Cancer Working Group on Radiofrequency Radiation

“The time is right for the IARC to upgrade its previous epidemiology based classification of RF exposure to higher levels in terms of the carcinogenicity of RF radiation for humans. Recently, two relatively well-conducted RF and microwave exposure studies employing the Sprague–Dawley strain of rats—without, however, using any cancer-promoting agents (or cocarcinogens)—showed consistent results in significantly increased total primary cancer or overall tumor rates in animals exposed to RF radiation.”

James C. Lin PhD

The Significance of Primary Tumors in the NTP Study of Chronic Rat Exposure to Cell Phone Radiation , IEEE Microwave Magazine


“We conclude that there is clear evidence that RF radiation is a human carcinogen, causing glioma and vestibular schwannoma (acoustic neuroma). There is some evidence of an increased risk of developing thyroid cancer, and clear evidence that RF radiation is a multi‑site carcinogen. Based on the Preamble to the IARC Monographs, RF radiation should be classified as carcinogenic to humans, Group 1.”

Dr. Lennart Hardell MD, PhD

Comments on the US National Toxicology Program technical reports on toxicology and carcinogenesis study in rats exposed to whole-body radiofrequency radiation at 900 MHz and in mice exposed to whole-body radiofrequency radiation at 1,900 MHz” ] International Journal of Oncology

“The NTP findings along with recent replicated animal studies from Germany [47], supplemented other studies and provided sufficient evidence for carcinogenicity of mobile phone exposure in animals. Studies with chronic exposures have also provided evidence for possible mechanisms of MW effects, which involve production of reactive oxygen/nitrogene species. Taking into account the evidence from human epidemiological studies, MW exposure from mobile phones was suggested to be classified as human carcinogen according to the generally accepted Bradford Hill criteria.”

Igor Belyaev PhD

Main Regularities and Health Risks from Exposure to Non-Thermal Microwaves of Mobile Communication


“The evidence on an association between cellular phone use and the risk of glioma in adults is quite strong” and “In my opinion, RF exposure probably causes gliomas and neuromas and, given the human, animal and experimental evidence, I assert that, to a reasonable degree of scientific certainty, the probability that RF exposure causes gliomas and neuromas is high.”

Chris Portier PhD

formerly Director of the National Center for Environmental Health at the Centres for Disease Control and Prevention in Atlanta and the Director of the Agency for Toxic Substances and Disease Registry. Prior to CDC, Dr. Portier was with the National Institute of Environmental Health Sciences for 32 years where he served as the NIEHS Associate Director, Director of the Environmental Toxicology Program, and Associate Director of the National Toxicology Program, and Senior Scientific Advisor to the Director.

“The NTP studies show that the assumption that RF radiation is incapable of causing cancer or other adverse health effects other than by tissue heating is wrong.”

Ronald Melnick PhD

“Regarding ICNIRP’S Evaluation of the National Toxicology Program’s Carcinogenicity Studies on Radiofrequency Electromagnetic Fields” published  in Health Physics


“In my opinion, the currently available scientific evidence is sufficient to upgrade the carcinogenicity of cell phone radiation from the possible carcinogen (Group 2B) to the probable carcinogen (Group 2A)”

“Precautionary Principle should be implemented as broadly as possible and feasible…Whenever possible and feasible, wired connections should be promoted over wireless.”

 Dariusz Leszczynski PhD in his 2015 lecture


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