Like many other Americans, Renee Shafransky has heard the scare stories about how the continual use of cell phones may cause brain cancer. And like many other Americans, she is loath to give up the freedom and convenience that her beloved cell phone brings. So Shafransky, who is studying to become a psychotherapist at the Pacifica Graduate Institute in Carpinteria, Calif., takes a rather odd precaution while talking. "I always switch the phone from one side of my head to the other, so I can equalize the radiation," she says. Glenn Wilson, a truck driver in Oak Park, Ill., is worried about cell-phone radiation too. He uses a hands-free headset to divert radio waves away from his brain. "I try not to put it by my head anymore," Wilson says. "The headset is always with me."
There is no proven reason, of course, to think that either of these steps is necessary. Never mind that the Federal Government insists there is no cause for alarm, or that no study has established a link between cell-phone use and illness. Shafransky and Wilson belong to a small but growing group of consumers who are fretting about whether there are health risks. The cell-phone companies contend the fears are unfounded but, savvy marketers that they are, most are quietly introducing more efficient--and therefore lower-radiation--phones.
There seemed to be only good news last month in reports in the Journal of the American Medical Association and the New England Journal of Medicine that found no connection between cell phones and brain cancer. After comparing hundreds of cancer patients who had used cell phones with cancer-free control groups that had similar usage profiles, the studies concluded that cell phones posed no cancer risk. According to the New England Journal, "There was no evidence that the risks were higher among persons who used cellular phones for 60 or more minutes per day or regularly for five or more years."
Both studies were limited in scope and duration, since cancer can take many years to develop. Participants in the JAMA study had used cell phones for less than three years on average, while the New England Journal report included only 45 people--out of 1,581 studied--who had used cell phones for a total of more than 500 hours. Moreover, the New England Journal report said its study sample was too small to spot an increased risk of tumors in the part of the brain near the ear--precisely where tumors caused by radiation might be expected to occur. Both reports said longer-term studies are needed.
The cell-phone industry's best-known naysayer is George Carlo, a scientist who once headed a controversial five-year, $25 million industry-sponsored study of possible radiation hazards. "I just don't want people to put these phones to the sides of their heads," says Carlo, who this month published a scathing book about his findings, called Cell Phones: Invisible Hazards in the Wireless Age (Carroll & Graf; $25). Carlo maintains that his data show plenty of cause for concern; he uses a hands-free headset that keeps his frequently busy mobile phone away from his brain. But J.E. Moulder, a cancer specialist at the Medical College of Wisconsin and an occasional consultant to the cell-phone industry, questions Carlo's scientific studies and conclusions.