在线观看亚洲精品专区-在线观看亚洲免费-在线观看亚洲免费视频-在线观看亚洲欧美-欧美freexxx-欧美free嫩交video

食品伙伴網(wǎng)服務(wù)號
 
 
當(dāng)前位置: 首頁 » 專業(yè)英語 » 資源技巧 » 正文

手機會致癌嗎?

放大字體  縮小字體 發(fā)布日期:2008-03-10
核心提示:Good news! 根據(jù)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(fēng)險,而且還有可能會降低這種風(fēng)險。此前,人們一直對手機的微量輻射懷著恐懼心理。現(xiàn)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


    Good news! 根據(jù)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(fēng)險,而且還有可能會降低這種風(fēng)險。此前,人們一直對手機的微量輻射懷著恐懼心理。現(xiàn)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.

 

更多翻譯詳細信息請點擊:http://www.trans1.cn
 
關(guān)鍵詞: 手機 致癌
[ 網(wǎng)刊訂閱 ]  [ 專業(yè)英語搜索 ]  [ ]  [ 告訴好友 ]  [ 打印本文 ]  [ 關(guān)閉窗口 ] [ 返回頂部 ]
分享:

 

 
推薦圖文
推薦專業(yè)英語
點擊排行
 
 
Processed in 0.868 second(s), 159 queries, Memory 1.33 M
主站蜘蛛池模板: 色就操| 天天射天天干天天操 | 激情三级视频 | 黄网页在线观看 | 黄色三级网站免费 | 很黄的网站在线观看 | 免费 视频 1级 | 欧美日本一道免费一区三区 | 久久sp | tom影院亚洲国产一区二区 | 性感美女福利视频 | 91免费视 | 免费网站在线视频美女被 | 国模在线视频一区二区三区 | 亚洲第一区精品日韩在线播放 | 欧美高清激情毛片 | 亚洲成年人影院 | 性欧美视频在线观看 | 午夜影院在线观看免费 | 女人张开腿 让男人桶个爽 免费观看 | 免费一级特黄特色大片在线观看 | 国模私拍在线观看 | baoyu777永久免费视频 | 在线观看视频你懂得 | 日本黄色免费网址 | 天天草夜夜草 | 免费aⅴ网站 | 色免费观看 | 天天爽夜夜爽夜夜爽 | 久久久久国产一级毛片高清板 | 操女人视频网站 | 日本免费黄视频 | 激情欧美一区二区三区中文字幕 | 国产亚洲精品久久久极品美女 | 白丝丝袜高跟国产在线视频 | 久热国产在线 | 午夜色a大片在线观看免费 午夜色大片在线观看 | 爽好舒服快小柔小说 | 美女被免费视频的网站 | 亚洲国内精品 | 国产精品久久久久久福利 |