Last year an Albuquerque, New Mexico, anti-WiFi activist named Arthur Firstenberg sued his neighbor claiming that her use of wireless devices including her cell phone and computer caused health problems including hip pain and heart damage. According to an Albuquerque Journal story, District Judge Sarah Singleton ruled that scientific evidence does not support electromagnetic sensitivity.
In her ruling, the judge stated, "Studies have failed to provide clear support for a causal relationship between electromagnetic fields and complaints of EMS."
Singleton relied extensively on the position of the World Health Organization, which concluded that "well controlled and conducted double-blind studies have shown that symptoms do not seem to be correlated with EMF exposure... these symptoms may be due to pre-existing psychiatric conditions as well as stress reactions as a result of worrying about believed EMF health effects, rather than EMF exposure."
Determining whether or not Wi-Fi and EMFs have an immediate effect on health - as Firstenberg claimed - should be very simple using a blinded scientific testing protocol: the Wi-Fi would be randomly turned on or off (unbeknownst to Firstenberg), and he would state whether or not he had hip pain; either the pain appears when the WiFi is on, or it does not.