華歡笑:經常使用手機是否安全 |
送交者: 華歡笑 2011年03月04日13:17:02 於 [健康生活] 發送悄悄話 |
手機現在已經成為我們日常生活中不可缺少的通訊工具。它體積小,功能多,使用方便,可以隨身攜帶。有人形容,攜帶一部多功能手機,相當於攜帶一部小型電腦。由此可見,手機在我們的日常生活中扮演着越來越重要的角色。同時,我也讀過幾篇文章,其中談到有關經常使用手機不安全的報道,主要是講頻繁,長時間的使用手機有可能導致患腦部神經瘤的風險,患腦癌的風險也有可能提高。尤其是手機輻射所帶來的隱患往往是多年後才會出現。這樣的爭論已經持續了很長時間。這些說法還有待於更多,更嚴謹的科學實驗加以證明;目前,也沒有任何科學實驗證明頻繁使用手機安全的報告。對於這些報道的科學性,也是仁者見仁,智者見智。 (來自百度) 美國著名匹茲堡大學癌症研究所主任赫貝曼博士前天向3000名教職員發出警告,指打手機有致癌風險,應限制用量。據香港《文匯報》報道,這是首次有大型研究機構發出類似警告,赫貝曼表示,警告是根據未公開的初步研究結果而發出,是要防患未然,若等到有切實證據才行動便會太遲。 (來自2011年2月22日美國“HealthDay News”) A one-hour cell phone conversation stimulates the areas of your brain closest to the phone's antenna, but experts say they still have no idea whether these effects pose any long-term health risk. "We don't know whether this is detrimental or whether it could have some potential beneficial effects. We don't know one way or the other," said Dr. Nora Volkow, who is lead author of the study published in the Feb. 23 issue of the Journal of the American Medical Association. "Studies need to be done to see if there are long-lasting consequences. It's an important question." For the time being, the best bet is to use an ear piece or the speaker phone, "particularly in children and adolescents whose brains are much more vulnerable to insults of certain kinds," said Volkow, who is director of the U.S. National Institute on Drug Abuse. For this study, 47 volunteers were brought into a lab at the U.S. National Institutes of Health, where they had cell phones positioned at both their left and right ears. Researchers measured metabolism of glucose in the brain -- a measure of how hard the organ is working -- using positron emission tomography (PET) scans. Metabolism in the orbitofrontal cortex and temporal pole regions of the brain, those closest to the antenna, was about 7 percent higher when the right phone was in the "on" position than when both phones were off. Dr. Nora Volkow, Director, NIDA, NIH (Nora D. Volkow, M.D., director, National Institute on Drug Abuse, U.S. National Institutes of Health) |
|
|
|
實用資訊 | |