买房子要远离高压线

[super7]

科学家研究发现高压线附近儿童血癌几率翻倍

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http://www.sina.com.cn 2004年11月01日 07:38 北京娱乐信报

　　据新华社电 英国《独立报》10月30日报道，科学家在一项研究中发现，居住在高压电线附近的儿童，患白血病等癌症的可能性是居住在其他地区儿童的两倍。

　　牛津儿童癌症研究中心的杰拉尔德・德雷珀博士说，他领导的小组研究了3.5万名在1962年至1995年间患白血病和其他癌症的儿童，结果发现居住在高压线下周围100米以内的儿童患病几率略微大些。不过，德雷珀否认他本人或英国卫生部故意向公众隐瞒了研究结果





。英国天空台此前报道说，这项研究结果被卫生部有意隐藏了3年。

　　德雷珀说：“18个月前，我和其他科学家一道研究我最初的发现，那时还很模糊、不明确，我自己都弄不大懂、想再看看有没有其他的原因。”德雷珀博士重新检查了数据，写出了最后这份报告。

　　独立组织“特伦特姆环境行动计划”估计，英国每年大约500名白血病患儿中，有2到6人受高压线影响患病。其他国家一些研究也显示，受高电磁场辐射的儿童，例如居住在高压线下的儿童，患白血病的几率是其他儿童的两倍。

　　英国全国辐射防护委员会指出，在英国，大约有0.5%的人居住在高电磁场地区。该委员会建议政府应采取措施、抵制辐射。

　　“特伦特姆环境行动计划”主席莫琳・阿斯伯里说：“政府应该马上行动起来。我们不能在犹豫不决中等待十年。首先，部长们应该立法禁止在高压线附近建造房屋。其次，应设立一个项目、清除那些悬挂在房屋上面的高压线。我们明白，这并不能立即完成，但至少也该开始着手了。”

 

[oread]

Power Lines Double Risk Of
Cancer In Children
By Charles Arthur
Technology Editor
The Independent - UK
10-30-4

Living near a high-voltage power line roughly doubles the risk of childhood cancers such as leukaemia, scientists say.

Dr Gerald Draper of the Oxford-based Childhood Cancer Research Group said a recent study he led looked at 35,000 cases of childhood leukaemia and other cancers between 1962 and 1995, and results suggest a slightly higher chance of children living within 100 metres of a high-tension overhead cable developing the disease.

But he angrily denied claims that the work had been suppressed by himself or the Department of Health, which commissioned the study. He also emphasised that the link to childhood cancers was weak.

An independent group, the Trentham Environmental Action Campaign, estimated the power-line effect would cause between two and six of the 500-odd cases of child leukaemia reported each year in Britain. On average, one in 2,000 children under 15 develops leukaemia, and there are 1,500 childhood cancers each year. Some international studies have shown children exposed to the highest electromagnetic fields (EMF) in the home - as it often is in houses below power lines - are twice as likely to suffer leukaemia as children exposed to low EMF.

About 0.5 per cent of the UK population live in houses above that level, says the National Radiological Protection Board, which advises the Government on hazards from radiation.

Maureen Asbury, president of the Trentham campaign, said: "The Government should act now. We aren't prepared to wait 10 years while they dither. First, ministers should legislate against building houses near power lines. Then they should set up a project to remove the lines that traverse homes. We know it can't be done immediately, but it needs to be started."

But Dr Draper dismissed claims made on Sky News that he or the Department of Health had tried to keep the findings secret. "We hope to submit our paper, which is now complete, to a journal in about a fortnight for publication," he said. "But it is untrue to say the DoH is suppressing this work: it has been among those pressing me to get it published.

"Second, even if it wanted to suppress them, my contract allows me to publish what I want."

Sky News had claimed the results of the study were kept under wraps for three years, after being presented in 2001. Dr Draper said he had had no results to discuss in 2001. "About 18 months ago, I ran a private workshop with other scientists to talk about my preliminary findings, which were fuzzy; I did not understand them fully myself and wanted to see if there were other explanations."

He rechecked the calculations to produce the final report. The study does not find the biological mechanism by which power lines might increase the risk of cancers.

© 2004 Independent Digital (UK) Ltd http://news.independent.co.uk/uk/health_medical/story.jsp?story=577526

 

[oread]

EMF leukemia link disputed in study

In a comprehensive study of the theoretical link between living near power lines and cancer, a recent study found no evidence that proximity caused childhood leukemia.

Fears about exposure to magnetic fields, such as those created by current running through power lines, have led to a variety of lawsuits and public outcries. Electrical workers exposed on the job and people using cellular telephones have all feared an increase in cancer risk.

The study, reported in The New England Journal of Medicine, may not put the entire issue of electricity and cancer to rest, especially since it was limited to studies of children and not adults. However, one of the study advisors had this comment:

All in all, this study indicates that if there is an association between magnetic fields and cancer, it is very weak. It makes one wonder how much more money we want to throw at this subject, because, basically, we can? see anything definite, toxicologist Lawrence Fischer told The Associated Press. Fischer is director of the Institute for Environmental Toxicology at Michigan State University.

The $4.5 million-dollar study was done by the National Cancer Institute and involved about 638 children with acute lymphoblastic leukemia. The researchers measured magnetic fields in all the houses where the children had lived, and homes where their mothers lived while pregnant.

Citation:
Residential exposure to magnetic fields and acute lymphoblastic leukemia in children, Martha Linet, et al., The New England Journal of Medicine, July 3, 1997, 337 (1):1-7.