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Cell Phone Health Studies Continue
It's too soon to say whether radio frequency emissions from cellular phones cause adverse health effects, including brain cancer, say scientists at a recent Food and Drug Association conference.
"The scientific community is in agreement that [prior] research [shows cell phones] do not produce a demonstrative health effect at this time," says Dr. Jerry R. Williams, professor of oncology at Johns Hopkins University.
Williams carefully emphasizes the words "at this time," indicating a need for more studies. "The problem with cell phones is any genetic effect showing [evidence of] a carcinogen may not show up for 10 or 20 years," he says.
a Long-Term Prognosis
The working group includes scientists from the FDA, the Environmental Protection Agency, and Motorola. They reviewed previous data and outlined a plan for lab and cell phone user research that will last from three to five years.
The group spent two days trying to establish basic scientific parameters for research.
"I observed a rigorous and thorough discussion [at the meeting]," says Jo-Anne Basille, CTIA vice president for external and industry relations. The task is complicated, and contingent on the evidence discovered at each stage of the research, Basille adds.
Specifics of the plan are not available yet.
"The ball is currently in the scientists' court. They're still in the preproposal process," says Travis Larson, an industry association spokesperson.
Explosive Growth, Unknown Consequences
An October 1999 FDA consumer update on mobile phones notes: "It is well known that high levels of [radio frequency] can produce biological damage through heating effects (this is how your microwave oven is able to cook food). However, it is not know whether, to what extent, or through what mechanism, lower levels of [radio frequency] might cause adverse health effects as well."
The FDA adds, "Although some research has been done to address these questions, no clear picture of the biological effects of this type of radiation has emerged to date."
Prior research offers conflicting evidence, according to the FDA. A few animal studies suggest that low-level radio frequency exposure accelerates the development of cancer in laboratory animals. But scientists are uncertain whether that study's results apply to cell phone use.
Repetitive experiments are necessary to show effects can be duplicated, the working group says. For scientific legitimacy, data must be published and then reproduced by other groups.
The FDA is developing research recommendations based on the ideas and concerns of the working group, says Russell D. Owen, chief of the FDA's Radiation Biology branch.
The industry association recently required all cell phones submitted for certification after August 1 to include SAR data inside their packaging. Cell phones with SAR information will be on the market in three to six months. In the meantime, the FCC Web site has information on how consumers can determine the SAR level of their phones.
All parties are awaiting more conclusive research. In the interim, some scientists recommend using an ear piece with your cell phone to distance the antenna from your head. But that may simply mean radio frequency emissions are directed to another part of your body.