The radiation from cell phones may cause insomnia and lesser discomforts like headaches and confusion. Ha. Since the study was funded by the Mobile Manufacturers Forum, the objectivity is unquestionable: "The study indicates that during laboratory exposure to 884 MHz wireless signals components of sleep believed to be important for recovery from daily wear and tear are adversely affected."
Researcher Professor Bengt Arnetz adds: "The study strongly suggests that mobile phone use is associated with specific changes in the areas of the brain responsible for activating and coordinating the stress system." Radiation may also disrupt melatonin production.
The advice is simple: don't use your cellphones too much and avoid using it before you hit the sack.