Extensive research has been conducted into possible health effects of exposure to many types of radio signals.
The consensus of scientific reviews to date is that there are no established adverse health effects from exposures to radio signals at levels below the 1998 guidelines of the International Commission on Non-Ionizing Radiation Protection (ICNIRP).
However, the World Health Organization (WHO) has identified areas for continuing research to support future health risk assessments. Many research programmes have been guided by the WHO research recommendations for electromagnetic fields and the WHO estimates that since 1997 over US$200million of funding has been allocated to such programmes.
WHO Research Agenda for Radiofrequency Fields (January 2006) and Research Database, World Health Organization (WHO).
Report On Research Programmes And Projects In The EU And Switzerland, EMF-NET, Deliverable D30b, June 2006.
Guidelines for Limiting Exposure to Time-Varying Electric, Magnetic, and Electromagnetic Fields (up to 300 GHz), International Commission on Non-Ionizing Radiation Protection (ICNIRP), Health Physics 74(4):494-522, April 1998.