On the phone can cause brain cancer before the concern has been earned, and no results. After conducting a recent history of the largest international study of cell phone safety, concluded that: do not use mobile phones and mobile phone users than people, the incidence of cancer and no difference. Cell phones do not increase people's risk of brain cancer, but may slightly increase the use of the largest users were the chances of cancer.
Although the use of mobile phones in the UK more than 700,000, but in order to exclude any changes in disease rates, a second year to do this research.
Institute of Cancer Epidemiology in Copenhagen, led the researchers found, in the long-term mobile phone users and non-users in the central nervous system cancer incidence rate is almost the same. They investigated all Danish born after 1925, people over the age of 30 years of data, according to the mobile operator contract information, they were divided into users and non-mobile contract mobile phone contract users groups, of which more than 35 million mobile phone subscribers .
Meanwhile, researchers surveyed between 1990 and 2007 the number of patients with brain cancer in Denmark, this time is the increasing use of mobile phones in large quantities of time. The results show that a total of more than 10,000 cases of brain cancer, but the contract for mobile phone users and non-contract customers these two sets of people, the proportion of brain cancer did not differ significantly.
The researchers said the study's powerful is that it covers the entire population of Denmark, more than enough sample size, the results more credible. But it also has shortcomings, which identify two sets of people's standard mobile phone contract, and this does not reflect how they use mobile phones, some users use the phone frequently much higher degree will more than others, but not this part of the study distinguish heavy users. Overall, the study results support the view cell phone does not cause brain cancer.
Some experts suggest that young people under the age of 16 should be limited to basic use of mobile phone use, while talk time as short as possible. Danish scientists found that mobile phone users and non users of brain cancer or central nervous system cancer disease risk is not huge differences. In an interview study of 358,403 mobile phone users, the user is suffering from glioma 356, suffering from malignant tumors of the central nervous system users 846 people, the prevalence of mobile phone users and non-roughly the same proportion. The researchers pointed out that the use of mobile phones the longest (13 years) risk for the participants was not higher than other people.
But they also point out that users will not only determine the use of mobile phones in a longer period of time after suffering from cancer, in order to truly mobile "name", but the phone will also need to know what impact the health of children. Cancer Research UK evidence and health information department heads Hazel • Nunn said: "These findings are the most powerful evidence that the phone does not improve the brain or central nervous system cancer disease risk."
Sweden's Karolinska Institute, Professor Anders • ach Boehm of the study to be praised the way, and pointed out that this is a "reassuring" the study found. Cambridge professor David said: "This study found that a very important evidence that the phone will not have an impact on environmental risks of brain tumors."
When the British Royal Baker Seoul hospital medical physics department head Professor Malcolm • Sipei Lan said: "This research shows that use of mobile phones does not increase the overall risk for brain cancer, although the risk may be a few slight changes, but not statistically significant. "Danish researchers believe their study is still some limitations, for example, participants do not include" corporate user "account, that does not include those who use the phone for business users and they are precisely the most active mobile phone users.
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