How Can Future Epidemiology and Laboratory Studies Complement Each Other?

There is substantial controversy about whether low levels of intermittent exposures to both electric and magnetic fields, particularly those at power frequencies (50 and 60 Hz) and radio frequencies (RF) from, for example, cell phones and base stations, can lead to health effects such as child leukemia and brain tumors. As discussed in other chapters in this book, there have been a large number of epidemiological studies of the possibility that these fields can lead to these or other health effects. Some of these studies indicate a correlation between exposures and various health effects that is just above the statistically significant level, but others do not.