Highlights summarized by GreenFacts of the IARC classification and of the Interphone study, update of Nov 2011.
On May 31, 2011 the WHO/International Agency for Research on Cancer (IARC) has classified radiofrequency electromagnetic fields as possibly carcinogenic to humans (Group 2B) , based on an increased risk for glioma, a malignant type of brain cancer, associated with wireless mobile phone (or cell phone) use.
The evidence was reviewed critically, and overall evaluated as being limited among users of wireless mobile telephones for glioma and acoustic neuroma, and inadequate to draw conclusions for other types of cancers. The evidence from the environmental exposures mentioned above was similarly judged inadequate. The Working Group did not quantitate the risk; however, one study of past mobile or cell phone use (up to the year 2004), showed a 40% increased risk for gliomas in the highest category of heavy users (reported average: 30 minutes per day over a 10‐year period).
This has relevance for public health, says the report, particularly for users of mobile phones, as the number of users is large and growing, particularly among young adults and children.