The International Commission on Non-Ionising Radiation Protection committee has said that it is almost certain that mobile phones do not lead to brain cancer in adults, according to a report by the Guardian.
The committee of scientists studying the effect of mobile phones found that the number of cases of brain tumours was not increasing, despite the fact that mobile phones have been around for 20 years now and and have been popular for a decade.
The committee reviewed previous studies of potential links between mobiles and brain tumour.
Chairman of the committee Prof Anthony Swerdlow said, "The trend is increasingly against the hypothesis."
The findings by the committee comes a month after the International Agency for Research on Cancer (IARC), a research group of the World health Organisation (WHO), classified mobile phones as a possible cancer risk.
The agency had said that mobile phone signals were "possibly carcinogenic to humans" because some studies had linked them to some types of brain cancers.
For years, advocacy groups have raised concerns about health risks posed by mobile phones. They cited a possible connection between excessive phone use and glioma, a fatal brain tumour.
The IARC had announced the classification after an eight-day meeting in Lyon, France, in May this year. The research group had said that experts "reached this classification based on review of the human evidence coming from epidemiological studies."
The studies were assessed by 31 scientists from 14 countries. It is believed that the findings could make the UN health body reconsider its guidelines on mobile phones, the scientists had said.
