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  3. 下面你将听到关于手机辐射的内容 A review of cell phone studies commissioned by the Swedish Radiation Protection Authority has found no "cons

下面你将听到关于手机辐射的内容 A review of cell phone studies commissioned by the Swedish Radiation Protection Authority has found no "cons

admin2018-08-31  85
问题     下面你将听到关于手机辐射的内容
    A review of cell phone studies commissioned by the Swedish Radiation Protection Authority has found no "consistent evidence" of an increased risk of cancer from usage.   //
    Studies have differed on whether the use of mobile phones increases the risk of cancer as the handsets have become increasingly popular and efficient.  //
    The review looked at nine studies since 1996 that included factors such as type of phone, duration and frequency of use and brain tumor location.   //
    The agency acknowledged public concern about the issue and said many studies were still being performed and continued follow-up was needed on any possible carcinogenic effect linked to mobile phone usage.  //
    The review singled out research by Swedish oncologist Lennart Hardell, which said that long-term users of old-fashioned analog cell phones were at least 30% more likely than nonusers to develop brain tumors. Newer digital phones emit less radiation than older analog models of the sort studied.   //
    Hardell, whose study was published recently in the European Journal of Cancer Prevention, studied 1, 617 patients with brain tumors and compared them with a similar-size group of people without tumors.   //
    The review said Hardell’s study and some U. S. research with similar findings were "non-informative, either because the follow-up was too short and numbers of cancers too small, or because of serious methodological limitations. " //
    It contrasted those with three studies in the United States, and studies in Finland and Denmark, which Paulsson said used more reliable sampling methods and were based on medical reports rather than interviews with patients.   //
    Those studies found "a consistent picture... that appears to rule out, with a reasonable degree of certainty, a causal association between cellular telephones and cancer to date," the agency said.   //
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答案 瑞典辐射保护研究所有关手机研究的一份报告显示：目前尚未发现任何“一致的证据”表明使用手机会增加癌症的患病率。 手机的使用日益广泛和频繁，但对于它到底会不会增加癌症的患病率却一直没有一致的看法。 该报告分析了1996年以来的9份研究，所涉及的因素包括手机的种类、使用的时间和频率以及脑部肿瘤的位置等。 该机构注意到公众对这一问题的关注并表示各项研究尚在进行中，还需要后续的研究来找出任何与手机使用有关的致癌因素。 这份报告中还特别提到了瑞典肿瘤学家伦纳特-哈德尔所进行的研究。哈德尔认为长期使用老式模拟手机的人患脑癌的概率要比不用手机的人高至少30％。而据研究，新型数字机的辐射则要比老式模拟机少得多。 哈德尔共研究了1617名脑癌患者，并将他们与人数差不多的非脑癌患者进行了比较。他的研究报告刊登在最近的《欧洲癌症预防》杂志上。 报告认为哈德尔的研究以及得出类似结论的一些美国人的研究都“缺乏足够的证据，一则跟踪调查的时间太短，癌症患者的人数太少；二则调查方法也存在着严重局限性。” 该报告将他们的研究与另外三位分别来自美国、芬兰和丹麦的科学家所做的研究做了对比，认为这三位的研究的取样更可信，且以医学报告为依据，而不是靠对患者的采访。 因此，瑞典辐射保护研究所认为这些研究得出“一致的结论，即有相当程度的把握可排除手机的使用和癌症之间存在因果联系”。
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