be aware of the limitations of the study. From the IARC press release:
Change in pattern of use
The majority of subjects were not heavy mobile phone users by today's standards. The median lifetime cumulative call
time was around 100 hours, with a median of 2 to 2½ hours of reported use per month. The cut-point for the heaviest
10% of users (1640 hours lifetime), spread out over 10 years, corresponds to about a half-hour per day.
Today, mobile phone use has become much more prevalent and it is not unusual for young people to use mobile
phones for an hour or more a day. This increasing use is tempered, however, by the lower emissions, on average,
from newer technology phones, and the increasing use of texting and hands-free operations that keep the phone
away from the head.
What next?
Dr Christopher Wild, Director of IARC said: "An increased risk of brain cancer is not established from the data from
Interphone. However, observations at the highest level of cumulative call time and the changing patterns of mobile
phone use since the period studied by Interphone, particularly in young people, mean that further investigation of
mobile phone use and brain cancer risk is merited."
eta link
http://www.iarc.fr/en/media-centre/pr/2010/pdfs/pr200_E.pdf