World of Science

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أعضاء رسميون

تاريخ التسجيل: May 2006

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World of Science

02-18-2008, 07:30 PM

Study links heavy cell phone use to cancer Scientists claim to have found a link between heavy cell phone usage and cancer of the salivary gland. The researchers suggest people use hands-free cell phones to avoid a risk. The findings by Siegal Sadetzki, an epidemiologist at Tel Aviv University in Israel, and colleagues appear in the Feb. 15 issue of the American Journal of Epidemiology. The group found that heavy cell phone users faced a higher risk of both benign and malignant tumors in the gland.People who used a cell phone heavily on the side of the head where the tumor developed were found to have an about 50 percent higher risk for developing a tumor of the main salivary gland, or parotid, compared to non-cell phone users, the researchers wrote. The study was done on Israelis, which is a key because Israelis adopted cell phone technology early and use it heavily, Sadetzki said. Thus the exposure to phone radiation found in this study was higher than in previous studies.”This unique population has given us an indication that cell phone use is associated with cancer,” added Sadetzki. The study investigated nearly 500 people diagnosed with salivary gland tumors, and compared them to 1,300 healthy subjects. Participants were asked to detail how often and how long they typically talked on cell phones. The study also found an increased risk of cancer for heavy users who lived in rural areas. Because there are fewer antennas, cell phones in rural areas need to emit more radiation to communicate effectively. Sadetzki predicts that, over time, the greatest effects will be found in heavy users and children. Risks from cell phones have been hard to prove, mainly due to the long time it takes cancer to develop, she said. “This technology is here to stay,” Sadetzki said. “I believe precautions should be taken in order to diminish the exposure.” She recommends people use hands-free devices, and hold the phone away from one’s body. Less frequent and shorter calls are also preferable, she added. Children may be more susceptible, so parents should limit youngsters’ cell phone use and insist they use speakers or hands-free devices, she added. “Some technology that we use today carries a risk. The question is not if we use it, but how we use it.” Precisely how cell phones could affect the body is unclear, but a recent Finnish Radiation and Nuclear Safety Authority study found their radiation might subtly change the biochemical makeup of skin. That research appeared in the Feb. 11 online issue of the journal BMC Genomics 

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soubiri

أعضاء رسميون

تاريخ التسجيل: May 2006

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02-21-2008, 08:11 AM

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