|The hidden menace of cell phones and Cell Phone Radiation|
|Using a cell phone for more than 10 years increases the risk of getting brain cancer, according to the most comprehensive study of the risks yet published.|
The study – which contradicts official
pronouncements that there is no danger of getting the disease –
found that people who have had the phones for a decade or more are
twice as likely to get a malignant tumour on the side of the brain
where they hold the handset.
cell phone radiation
|The new study – headed by two Swedes, Professor
Lennart Hardell of the University Hospital in Orebro and Professor
Kjell Hansson Mild of Umea University, who also serves on the MTHR
program's management committee – goes some way to meeting the
The scientists pulled together the results of the 11 studies that have so far investigated the occurrence of tumours in people who have used phones for more than a decade, drawing on research in Sweden, Denmark Finland, Japan, Germany, the United States and Britain. They found almost all had discovered an increased risk, especially on the side of the head where people listened to their handsets.
Five of the six studies of malignant gliomas, cancers of the glial cells that support and protect the nerve cells, found an increased risk. The only one that did not still found an increase in benign gliomas. Four of the five studies that looked at acoustic neuromas – benign but often disabling tumours on the auditory nerve, which usually cause deafness – found them. The exception was based on only two cases of the disease, but still found that long-term users had larger tumours than other people.
The scientists assembled the findings of all the studies to analyze them collectively. This revealed that people who have used their phones for a decade or more are 20 per cent more likely to contract acoustic neuromas, and 30 per cent more likely to get malignant gliomas. The risk is even greater on the side of the head the handset is used: long-term users were twice as likely to get the gliomas, and two and a half times more likely to get the acoustic neuromas there than other people.
The scientists conclude: "Results from present studies on use of cell phones for more than 10 years give a consistent pattern of an increased risk for acoustic neuroma and glioma." They add that "an increased risk for other types of brain tumours cannot be ruled out".
Professors Hardell and Mild have also themselves carried out some of the most extensive original work into tumours among long-term cell phone users and have come up with even more alarming results. Their research suggests they are more than three times more likely to get malignant gliomas than other people, and nearly five times more likely to get them on the side of the head where they held the phone. For acoustic neuromas they found a threefold and three-and-a-half-fold increased risk respectively.
They have also carried out the only study into the effects of the long-term use of cordless phones, and found this also increased both kinds of tumours. Their research suggests that using a cell or cordless phone for just 2,000 hours – less than an hour every working day for 10 years – is enough to augment the risk.
Professor Mild told The Independent on Sunday: "I find it quite strange to see so many official presentations saying that there is no risk. There are strong indications that something happens after 10 years." He stressed that brain cancers are rare: they account for less than 2 per cent of primary tumours in Britain, though they are disproportionately deadly, causing 7 per cent of the years of life lost to the disease. "Every cancer is one too many," he said.
He said he uses a cell phone as little as possible, and urges others to use hands-free equipment and make only short calls, reserving longer ones for landlines. He also said that cells should not be given to children, whose thinner skulls and developing nervous systems make them particularly vulnerable.
The danger may be even greater than the new study suggests for, as Professor Mild says, 10 years is the "minimum" period needed by cancers to develop. As they normally take much longer, very many more would be likely to strike long-term users after 15, 20 or 30 years – which leads some to fear that an epidemic of the disease could develop in the coming decades, particularly among today's young people.
On the other hand, the professor points out that the amount of radiation emitted by phones has decreased greatly since the first ones came on the market more than a decade ago, which suggests that exposures and risks should also be falling. But he still recommended choosing phones that give out as little radiation as possible (see below), and pointed out that people are now also exposed to many other sources of radiation, such as masts and Wi-Fi systems, though these emit much less than cell handsets.
Britain's official Health Protection Agency – which has taken a cautious view of claims that radiation from cell phones, their masts and Wi-Fi installations can damage health – admits that the study "may be indicative" of a risk, but says that "such analyses cannot be conclusive".
The cell Operators Association said: "This is not new data for the World Health Organization and the many independent expert scientific committees who state that there are no established health risks from using cell phones that comply with international guidelines." Both sides agree that there is need for more research. Professor Mild said a possible link between cell phones and Alzheimer's disease should also be examined, since "we have indications that it might be a problem" as well as a possible link with Parkinson's disease, "which can't be ruled out".
In the meantime, the scientists want a revision of the emission standard for cells and other sources of radiation, which they describe as " inappropriate" and "not safe". The international standard is designed merely to prevent harmful heating of living tissue or induced electrical currents in the body – and does not take the risk of getting cancer into account. Professors Hansen and Mild serve on the international BioInitiative Working Group of leading scientists and public health experts, which this summer produced a report warning that the standard was "thousands of times too lenient".
The BioInitiative report added: "It has been established beyond reasonable doubt that some adverse health effects occur at far lower levels of exposure... some at several thousand times below the existing safety limits." It also warned that unless this is corrected there could be " public health problems of a global nature".
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