It is a well-known fact that mobile and cordless phones emit radio frequency electromagnetic fields (RF-EMF), when used and it is even clearer that there is an increased risk of developing brain tumour as an effect. In a recent study done in May 2011, The International Agency for Research on Cancer (IARC) at the World Health Organization (WHO) evaluated the carcinogenic effect to humans from RF-EMF, and concluded that RF-EMF is a possible group 2B human carcinogen.
In a presidential address at the British Royal Society of Medicine in 1965, all nine issues on causation were evaluated by epidemiologist Bradford Hill. The criteria on strength, consistency, specificity, temporality, and biologic gradient for evidence of increased risk for glioma and acoustic neuroma were fulfilled and the plausibility of lab results proved theories.
Studies in modern times include Lennart Hardell and Michael Carlberg using the Hill viewpoints from 1965, for evaluating strengths of evidence of the risk for brain tumors associated with use of mobile and cordless phones. (Reference paper: Environ Health 2013-0006, De Gruyter; DOI 10.1515)
This new study confirms previous results of an association between the use of mobile and cordless phones, and malignant brain tumours. The findings solidify the claim that RF-EMFs are indeed carcinogenic.
Earlier study cases have shown close links between long-term use of mobile and cordless phones and ‘glioma’ and acoustic ‘neuroma’, but not for ‘meningioma’ (malignant tumours). The easiest organ for RF-EMFs to bust into is the brain and that is the beginning of a malignant tumour. The International Agency for Research on Cancer(IARC) classified in May, 2011 RF-EMF as a group 2B, a “possible” human carcinogen. The aim of this study was to further explore the relationship between especially long-term (>10 years) use of wireless phones and the development of malignant brain tumours.
A brand new case control system was formulated for both genders aged 18-75 years and diagnosed during 2007-2009. One population-based control, matched on gender and age (within 5 years), was used for each case. The use of mobile phones and cordless phones were assessed by a self-answered questionnaire. Linear adjustments for age, gender, year of diagnosis were made.
Digital type of wireless phones (2G and 3G mobile phones, cordless phones) gave increased risk with latency >1-5 years. This study confirmed previous results of an association between mobile and cordless phone use and malignant brain tumours. These findings provide support for the hypothesis that RF-EMFs play a role – both in the initiation and promotion stages of carcino-genesis.
(Reference paper: Hardell L, Carlberg M, Soderqvist F, Mild KH. Case-control study of the association between malignant brain tumours diagnosed between 2007 and 2009 and mobile and cordless phone use, Int J Oncol. 2013 Sep 24. doi: 10.3892/ijo.2013.2111. [Epub ahead of print])