Roger Coghill is a specialist in bioelectromagnetics, has described a health syndrome associated with excessive mobile phone use:
Health syndrome
"Around 40% of users complain that they suffer from headaches, and many people find that after a day's heavy use of the phone that they have a thumping headache.
"After a while users feel extremely tired, and their reaction times start to fall off.
"After 14 months to two years some users will start to develop leukaemia.