A very large, 30-year study of just about everyone in Scandinavia shows no link between cellphone use and brain tumors, researchers reported on Thursday.
Even though mobile telephone use soared in the 1990s and afterward, brain tumors did not become any more common during this time, the researchers reported in the Journal of the National Cancer Institute.
Some activist groups and a few researchers have raised concerns about a link between cellphones and several kinds of cancer, including brain tumors, although years of research have failed to establish a connection."We did not detect any clear change in the long-term time trends in the incidence of brain tumors from 1998 to 2003 in any subgroup," Isabelle Deltour of the Danish Cancer Society and colleagues wrote.
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