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Detailed text transcripts for TV channel - CNN - 20110522:11:51:00

Cancer. but he says the recuperation was challenging. took a long time. even now, i have some deficits and you try to find ways to overcome them. reporter: there s something else. marks feels responsible for his own cancer. i know what it is. it was my cell phone use. there s no way you could put something to your head for 20 years and not have it cause something. reporter: while there are some studies suggesting cell phones pose a health risk, many others do not. as a trade group representing cell phone manufacturers tells cnn numerous experts and government health and safety organizations around the world have reviewed the existing database of studies and ongoing research and concluded that rf products meeting established safety guidelines pose no known health risk. but still, there are many cell phone manufacturers that recommend that you do not put the phone next to your head. that is something marks and his ....

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Detailed text transcripts for TV channel - CNN - 20110522:11:58:00

Questions. this from our blog if cell phones cause cancer, wouldn t we have seen a huge increase in brain cancer recently? very important question. again, the answer sort of is this idea that not necessarily because it takes a period of time for cancers to develop. cell phones have just become popular in this country over the last 15 years. there s only 30 million cell phones in this country in 1996 and now there are ten times as many, 300 million. people are using their cell phones more but it takes 0 to 30 years for these tumors to develop. we haven t had that time yet. this i m a parent with a child who keeps her cell phone stuck to her head! what s the greatest risk for her? the greatest risk is you don t get to talk to your child as much anymore. children have thinner scalps and skulls and as a result radiation may penetrate more greatly. that s a concern, dr something ....

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Detailed text transcripts for TV channel - CNN - 20110522:11:40:00

About here. these are natural scans of the brain looking at what s known as glucose metabolism. one way of measuring brain activity. this is with the cell phone on. look at the yellow around the brain compared to when the cell phone is off, very little yellow comparatively speaking. it shows there s an impact from using cell phones actually on the brain. we don t know if it s good or bad right now. these are preliminary findings. there may be concerns among people who already have some sort of brain problem. for example, someone has a brain tumor you can see increased glucose metabolism because cancer is high activity part of the brain and could that worsen it somehow. that s the questions that researchers at nih raised and that s part of the speculation overall. they say they are committed to studying it further. it all comes back to a question of safety. i should tell you now right off the bat what we re talking about today is highly controversial. we ve talked to industry experts wh ....

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Detailed text transcripts for TV channel - CNN - 20110522:11:43:00

And they should not be kept directly on the brain or body and that s what the fine print warnings will tell you. a lot of people listening to us would say i thought this was studied and if there was something bad, we would know about it. studies of the hiroshima bombings know that brain cancer did not show up until 40 years after the bombing owe secured. when you put it like that, it seems to make sense that we certainly just don t know, enough time has not passed to say anything definitive on this yet the jury seems to be clear on this. i don t think the jury is clear in other nations right now. i think the answer to that has to do with the old fashioned issue, isn t it? the cell phone industry has been very, very powerful and is very influential on both sides of the aisle. all of us including me don t want to give up our phones. over ten years, the effect of using a phone would you describe it as a cumulative problem? are you accumulating the problems in your brain? it is ....

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Transcripts For CNNW Sanjay Gupta MD 20110522

what surprised me is voices urging caution are not only getting louder, but they re getting more prominent. all right. i m on my way. if you ve ever put a cell phone to your ear, you should listen to what neurosurgeon dr. keith black has to say. there s no way to say that cell phone use is safe. i think the public has a right to know there could be a potential risk. the public generally assumes that if one is selling something on the market, that we have had assurances that that device is safe. to be clear, dr. black s message is at odds with headlines from the largest international study on cell phones and cancer. their conclusion, little or no evidence cell phones are associated with brain tumors. if you look just one layer deeper into the appendix of that same study, you ll see something unsettling. turns out participants in the study who use a cell phone for ten years or more had double the rate of a type of tumor. keep in mind cell phone use in the united s ....

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