Most, but not all, childhood studies have reported a weak association between estimates of residential magnetic field exposure and certain types of childhood cancer. Worker studies have shown mixed results. Given the uncertainty of the issue, the medical and scientific communities have been unable to determine that EMF causes health effects or to establish any standard or level of exposure that is known to be either safe or harmful. Many researchers believe that if there is a risk of adverse health effects from EMF, it is probably low, but warrants further investigation.
Recent concern focuses on exposure to magnetic fields rather than electric fields.
Research is Ongoing A number of research studies are now under way to determine if magnetic fields do indeed pose any health risk and, if so, what aspect of the fields might be harmful. What You Can Do Studies of EMF have not shown that people need to change the way they use electric appliances or equipment. Don't stay any closer than necessary to electric appliances. Use personal appliances, such as hair dryers, less often or for less time. If you use and electric blanket, turn it off before going to sleep.