The largest ever investigation into the link between mobile phone use and cancer has concluded 
that there is no relationship.
420,000 mobile phone users in Denmark have been studied for 21 years and the results showed that they were no more likely to develop the disease than the general population.
The huge number of people involved in this study means that any link can now be ruled out even for long term users. The sample size covers more than half of Danes who started using a mobile phone between 1982 and 1995. 21 year study finds mobile phones do not cause cancer