Whether Mobile Phones Cause Brain Cancer Research For 10 Years ...
World Health Organization affiliated IARC May 16 announced a 10-year, aimed at identifying the use Mobile Will increase the incidence of brain tumors, but failed due to contradictory results, because the research methods and study biases.
The results of two contradictory 10 years, this study is most mobile phone manufacturers against the use of mobile phone group, the medical profession and the concern of many mobile phone users.
However, IARC 16, said that since 2000, for a total of 1.3 million people in 13 countries start of the study showed contradictory results clearly show that the research method problems, the subjects are selected and error, the deviation of survey data.
Reuters reported comprehensive study of a single study, those who use mobile phones than those who never used cell phones at lower risk of suffering from a brain tumor, but another individual findings is that the longer the daily phone calls, patients higher brain tumor risk.
Researchers from these two results, and among other results, a scientific and reasonable explanation.
?Now we not say that they (cell phones and brain tumors) have no relationship,? responsible for the study of 21 experts, one of Spain?s Environmental Epidemiology Research Center scientist Elizabeth? Cady said, ? also unable to confirm the positive relationship that may exist. ?
Complex factors Mobile phones since the mid-twentieth century, 80 years in the global spread. At present, the global use of mobile phones is estimated that 5 billion.
The study started in 2000, in Australia, Canada, Denmark, Finland, France, Germany, Israel, Italy, Japan, New Zealand, Norway, Sweden and the United Kingdom select a total of 2708 patients with brain glioma, 2409 Name meningioma patients, and 7500 to investigate non-cancer patients.
Research method is that for launch survey study, taking their average length of time the phone every day, daily average call lengths, then the database collation and comparison.
But in 10 years of study, the researchers found, the study is more complex than imagined.
First, over time, and now the mainstream mobile phone market, the amount of radiation and of the last century 80s to 90s compared to when the phone is very different. Today, one hour a day by cell phone electromagnetic radiation may be released 20 years ago to play with the phone like 5 minutes.
Second, people use cell phones for each different, some people send 100 text messages a day, but a phone call does not play, it was called but the use of hands-free or Headset .
Experts say, the last 10 years, costing 19.2 million euros of imprecise because many factors have to declare failure.
The latest research to spend 30 years
A group of European scientists launched a study last month in preparation for the period of 30 years, a comprehensive study of mobile phones on human health of long-term effects.
Investigation launched in five European countries, the survey as many as 25 million people. The study should be more than a decade ago of the feasibility and accuracy. Because the new study will give up the ?back? mode, but adopted a ?Record? mode, receiving real-time daily record of the investigation are required to use the phone time.
Canadian scientists Semitaiji said, ?If anyone worried about the potential danger, there is also a way, that is to use the phone hands-free, do not let your head on the electromagnetic wave convolution.?
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