Evaluation of mobile phone and cordless phone use and glioma risk

In a recent article published in a scientific journal we evaluated use of wireless phones (mobile phones and cordless phones; DECT) and glioma risk. Glioma is a brain tumour that is one of the most common types. We used the Sir Austin Bradford Hill nine viewpoints on association or causation published in 1965 at the height of the debate on smoking and lung cancer risk. The same method can be used for other environmental agents and cancer risk.

As Bradford Hill pointed out not all nine viewpoints need to be fulfilled. The current knowledge may not exist in certain aspects. However, certain aspects such as first exposure before the onset of the disease and a dose-response relationship should exist.

Our evaluation was based on human epidemiological studies and findings in laboratory studies on animals and in cell cultures. Our conclusion was all nine viewpoints by Bradford Hill are fulfilled and that glioma is caused by radiofrequency (RF) radiation:

The nine Bradford Hill viewpoints on association or causation regarding RF radiation and glioma risk seem to be fulfilled in this review. Based on that we conclude that glioma is caused by RF radiation. Revision of current guidelines for exposure to RF radiation is needed.

RF radiation as a human carcinogen was evaluated by the International Agency for Research on Cancer (IARC) at WHO in May 2011. The conclusion was that such exposure is a possible human carcinogen, Group 2B according to the definition by WHO. The scientific evidence has increased since then and RF radiation should now be regarded as a human carcinogen, Group 1. An updated new evaluation by IARC is urgently needed.

We discuss in our article scientific controversy in this area including industry influence and ties between researchers and industry. A key player is the International Commission on Non-Ionizing Radiation (ICNIRP), a private NGO based in Germany that selects its own members and that does not publish funding sources. The ICNIRP guideline for RF radiation is extremely high and only based on short time thermal (heating) effects. Non-thermal effects are disregarded, that is a vast majority of studies on negative health effects from RF radiation not based on tissue heating. This gives in practice a ‘green card’ to roll out this technology since the high ICNIRP guideline is rarely compromised. Several governmental organizations in different countries have adopted the high ICNIRP level for exposure.

A new Health Criteria (Monograph) on RF radiation and health is under production by WHO. As discussed previously this document is biased towards the no-risk paradigm thereby neglecting published health risks from RF radiation. It has turned out that almost all persons in the core group for the WHO Monograph are present or former members of ICNIRP, see Table.


Table. Members of WHO Monograph core group and their involvement in other groups

Simon Mann X X X
Maria Feychting X X X X*
Gunnhild Oftedal X X
Eric van Rongen X X X
Maria Rosaria Scarfi X X* X X
Denis Zmirou X


WHO: World Health Organization

ICNIRP: International Commission on Non-Ionizing Radiation Protection

AGNIR: Advisory Group on Non-Ionising Radiation

SSM: Strålsäkerhetsmyndigheten (Swedish Radiation Safety Authority)

SCENIHR: Scientific Committee on Emerging and Newly Identified Health Risks


Thus, this fact – being member of both ICNIRP and the core group – is a serious conflict of interest. One would rarely expect that the core group members would present an evaluation that is in conflict with their own evaluation in ICNIRP. It has been requested that these persons should be replaced by experts with no conflict of interest, a most reasonable viewpoint.

As a matter of fact the Ethical Board at the Karolinska Institute in Stockholm, Sweden, concluded already in 2008 that being a member of ICNIRP may be a conflict of interest that should be stated in scientific publications (Karolinska Institute Diary Number 3753-2008-609). This is not done as far as can be seen in publications by ICNIRP persons such as members of the WHO core group.

The fifth generation (5G) of RF radiation is now under establishment. This is done without proper dosimetry or studies on potential health effects. The major media attention is a ‘love song’ to all possibilities with this technology such as so called self-driving cars, internet of things etc. Consequences for human health and environment such as wild life and vegetation are not discussed. Politicians, governmental agencies and media are responsible for the skewed debate. The layman is not informed about opposite opinions on this development. Health effects from RF radiation in media is a ‘no issue’ at least in Sweden but also in most other countries.


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