日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

您現在的位置: > Language Tips > Easy English > Odd Question  
 





 
手機會致癌嗎?
[ 2006-12-08 14:02 ]

Good news! 根據丹麥研究者的報告,長時間使用手機并不會增加人們得癌癥的風險,而且還有可能會降低這種風險。此前,人們一直對手機的微量輻射懷著恐懼心理。現在人們可以放心地使用手機了。

Using cell phones, even over a long period of time, does not appear to raise a person's risk for cancer, Danish researchers report. Their study, which appears in today's Journal of the National Cancer Institute, is the first to include people who had used cell phones for as long as 21 years.

Why it's important: Because cell phones emit a type of low-energy radiation, there is concern that using them over a long period of time could lead to cancer, especially in the brain. The growing popularity of cell phones makes it important to learn if this technology actually does have an effect on cancer.

What's already known: Of 16 previous studies looking at cell phone use and brain tumors, only 2 have found any link, says Michael Thun, MD, MS, the American Cancer Society's vice president of epidemiology and surveillance research. However, the methods used in those 2 studies led many researchers to question the findings. One problem researchers face is that cell phones are relatively new devices, so there aren't a lot of people who have used them for more than about 10 years. It can take longer than that for some cancers to develop, so it's not clear whether using cell phones for more than 10 years might pose a problem.

How this study was done: The Danish researchers tried to address this problem by including people who had begun using cell phones as early as 1982. They looked at cell phone records for more than 420,000 adults in Denmark, and compared those to cancer cases listed in the Danish national cancer registry. They were looking to see if the number of cancer cases among cell phone users was different from what would be expected in the general population. That's a way of finding out whether cell phone users have a higher or lower cancer risk than other people. People who had had cancer before getting a cell phone were excluded from the study.

What was found: The overall number of cancers among cell phone users (14,249) was about the number expected (15,001). Cell phone users did not have a higher risk of brain or central nervous system cancers, salivary gland tumors, eye tumors, or leukemia. This was true even for people who had used cell phones for longer than 10 years. In fact, these long-term users appeared to have a lower risk of brain cancer. The researchers don't have a good explanation for that; they think it might be a chance finding and say more studies are needed.

The bottom line: Thun calls the new findings "reassuring," but not the final answer.

Citation: "Cellular Telephone Use and Cancer Risk: Update of a Nationwide Danish Cohort." Published in the Dec. 6, 2006 Journal of the National Cancer Institute (Vol. 98, No. 23: 1707-1713). First author: Joachim Sch?nish Cancer Society.

(英語點津 Annabel 編輯)

 
 
相關文章 Related Stories
 
         
 
 
 
 
 
         
 
 

48小時內最熱門

     

本頻道最新推薦

     
  Dog-training program
  西方婚禮到底是怎樣的?(通訊員稿)
  Give me five!
  “電”是怎樣命名的?(通訊員稿)
  為什么鳥兒能飛翔(通訊員稿)

論壇熱貼

     
  福娃英文名更改,為何事先不考慮好?
  男扮女裝,女扮男裝?
  請教高人:關于社保方面的詞匯
  評頭論足之妙語連篇
  常用英語口語1000句
  翻譯:老鄉見老鄉,兩眼淚汪汪




主站蜘蛛池模板: 成人午夜在线 | 侮辱丰满美丽的人妻 | 青娱乐手机免费视频 | 91久操| 新久草视频 | 99精彩视频| 久久精品国产一区二区 | 激情小说五月 | 人人干人人模 | 成人小视频在线观看 | 久久精品视 | 欧美综合自拍亚洲综合百度 | 欧美一区二区三区视频 | 综合色导航 | 激情av在线 | 精品一卡2卡三卡4卡乱码免费 | 9久9久女女热精品视频免费观看 | 免费观看一级黄色片 | 亚洲精选久久 | 一区二区三区四区精品 | 一级欧美毛片成人 | 一本色道精品久久一区二区三区 | 成人av免费在线观看 | 99视频在线精品 | 欧美亚洲视频一区 | 亚洲色图国产 | 国模论坛 | 成人免费a视频 | 免费看黄a | 亚洲国产视频网站 | 中文字幕日韩欧美一区二区三区 | 成人性视频免费网站 | 五月婷婷久久综合 | 欧美日本国产VA高清CABAL | 成人免费视频网站在线观看 | 伊人欧美 | 精品国产乱码久久久久久88av | 成人小视频在线观看免费 | 91高清网站 | 亚洲国产午夜 | 欧美成人18性 |