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Cell phone-cancer link inconclusive, but experts advise caution
WASHINGTON (CNN) — The science is still out, but  evidence so far indicates people should limit how much we use a cell  phone, BlackBerry or iPhone due to a possible cancer risk, a Senate  subcommittee heard Monday.

While no solid connection between mobile communications devices and  human cancer has been established, studies indicating the likelihood of  such a link call for a precautionary approach, medical experts  testified at the hearing chaired by Democratic Sen. Tom Harkin of Iowa.

Recommendations included using such devices less, keeping them away from the body, and limiting their use by children.

"Children have a configuration of their skull that does allow  penetration of cell-phone radiation," noted Dr. John Bucher, associate  director of the National Toxicology Program at the National Institutes  of Health.

However, Bucher stopped short of declaring a causal link between cell-phone use and human cancer.
  Other witnesses before the Senate Labor, Health and Human Services,  Education and Related Agencies Subcommittee noted the relatively short  history of widespread cell-phone use, dating back only two decades.

Early studies are inconclusive, said Dr. Siegal Sadetzki of Tel Aviv  University, but those done on subjects after 10 years of cell-phone use  were showing higher incidences of tumors and other problems.

She cited a correlation between the amount of use, the side of the  head where the device was held for talking, and incidences of tumors in  salivary glands in that area.

"Until definite answers are available, some public health measures —  especially for children — should be instituted," Sadetzki said. "It's  not whether we should use cell phones, but how we should use them."

None of the participants in the hearing — including Harkin — said  they were giving up their cell phones, but all agreed that restricting  use and keeping the units away from the body were good ideas.

Dr. Devra Davis — a founding director of the Center for  Environmental Oncology at the University of Pittsburgh Cancer Institute  — criticized U.S. regulators and researchers for a lack of attention to  the issue. She called for updated standards based on new research, and  increased funding for more extensive research.

"I am not alarmed — I am concerned, because the world has changed very rapidly and we have a right to know," Davis said.