The World Health Organization (WHO) recently made headlines when it called cellphones “possibly carcinogenic to humans.” A new review of research from Britain, the U.S. and Sweden says there is, in fact, no evidence linking cancer and cell phone use, according to Reuters.

[ad#Google Adsense 300×250 in story]Anthony Swerdlow of Britain’s Institute of Cancer Research warned against discounting the WHO’s findings, since, as he explained, mobile phones needed to be put into “a pre-defined risk category.”

The study looked at almost 13,000 mobile phone users over 10 years and concluded that “it gave no clear answer.” Other studies produced elsewhere similarly don’t find any indication of increases in brain tumors a decade after mobile phones have gone into wide use.