Risks for Children
There are no studies of adults who used cell phones extensively as children and adolescents. Now that many children use cell phones, such studies are needed to determine whether children might be more vulnerable to radiation exposure than adults. Researchers also warn that the effects will be compounded in children and teenagers as they have started using cell phones earlier than adults and will continue to use them for longer.
While studies of adults have focused on cancer, a study published in the medical journal Epidemiology in July 2008 suggests that cell phone exposure could affect children's behavior. The children in the study who were hyperactive or had emotional or behavioral problems, including trouble getting along with other kids were much more likely to have mothers who used cell phones during pregnancy. The children's problems, as reported by their mothers, were even more pronounced for children whose mothers used cell phones both during pregnancy and during their children's first seven years of life. The children of these mothers were 80% more likely to have problems than children whose mothers rarely or didn't use cell phones.
These results, based on a survey of Danish mothers, whose 13,159 children turned 7 in 2005 and 2006, are troubling but also somewhat difficult to interpret. While the levels of radiation the children experienced because of their mothers' use were likely very small, we also know from a study published in the July 7 issue of Physics in Medicine and Biology, that the brains of children under 8 absorb twice as much radiation from cell phones as do adults. On the other hand, if mothers using cell phones are paying less attention to their children, that could also contribute to children's behavioral problems. Research that provides more details of cell phone usage and other factors is needed to interpret the relationship between a mother's cell phone use and her child's behavior, but meanwhile pregnant women and mothers of young children should consider limiting their use of cell phones.