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Study of Cellphone Risks Finds 'Some Evidence' of Link To Cancer, At Least In Male Rats (nytimes.com)
For decades, health experts have struggled to determine whether or not cellphones can cause cancer. On Thursday, a federal agency released the final results of what experts call the world's largest and most costly experiment to look into the question. The study originated in the Clinton administration, cost $30 million and involved some 3,000 rodents. The experiment, by the National Toxicology Program, found positive but relatively modest evidence that radio waves from some types of cellphones could raise the risk that male rats develop brain cancer. But he cautioned that the exposure levels and durations were far greater than what people typically encounter, and thus cannot "be compared directly to the exposure that humans experience." Moreover, the rat study examined the effects of a radio frequency associated with an early generation of cellphone technology, one that fell out of routine use years ago. Any concerns arising from the study thus would seem to apply mainly to early adopters who used those bygone devices, not to users of current models.
The lowest level of radiation in the federal study was equal to the maximum exposure that federal regulations allow for cellphone users. That level of exposure rarely occurs in typical cellphone use, the toxicology agency said. The highest level was four times higher than the permitted maximum. The rodents in the studies were exposed to radiation nine hours a day for two years -- far longer even than heavy users of cellphones. For the rats, the exposures started before birth and continued until they were about 2 years old. Some 2 to 3 percent of the male rats exposed to the radiation developed malignant gliomas, a deadly brain cancer, compared to none in a control group that received no radiation. Many epidemiologists see no overall rise in the incidence of gliomas in the human population.
"The study also found that about 5 to 7 percent of the male rats exposed to the highest level of radiation developed certain heart tumors, called schwannomas, compared to none in the control group," the NYT reports.
It's worth nothing that the rats were exposed to radiation at a frequency of 900 megahertz, the frequency used in the second generation of cellphones that prevailed in the 90s, when the study was first conceived. For comparison, fourth generation (4G) and fifth generation (5G) phones employ much higher frequencies, which are "far less successful at penetrating the bodies of humans and rats," the NYT reports. |
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| Lisa Jakub |
It's estimated that 16 million people in the U.S. have struggled with depression - and I include myself in that statistic. It's real, and it's not shameful, and there is help available. You can bring it to the light, you can tell the truth, you can go to a meeting, you can reach out to a friend. None of us are alone. |
| Elliott Abrams |
Now in its third year in office, the Obama Administration has never championed the cause of human rights. Its slow reaction in June 2009 to the stealing of the election in Iran and the birth of the 'Green Movement' there, and its delay in backing the rebellions in Egypt, Libya, and Syria, are evidence of this problem. |
| Deepak Chopra |
If you're studying for an exam you're not thinking about the results. If you're always worried about the results, you can't study a lot. So to be engaged and detached from the outcome is excellent. Excellence is behavior. I mean, isn't that what martial arts is about? And that's what meditation is about, that's what, in many ways, sports are about. |