While industry sponsored studies have failed to show a clear link between cell phone usage and brain tumours (there are other effects which have been ignored by industry studies), independent scientific studies show that the radiation from hand held mobile phones do pose serious health risks and can increase the incidence of brain tumours. Microwave signals travel through human tissue, glass, metal and plastic. Human tissue also absorbs microwave radiation. The effects of even minute levels of microwave radiation have been shown to:

*  open the blood-brain barrier
*  heat head & brain tissue
*  disrupt brain activity
*  reverse cell membrane polarity
*  alter brain waves
*  damage DNA
*  cause tumours
*  speed tumour growth
*  increase blood pressure
*  weaken immune system

The damaging affects of the radiation can produce a wide range of physical symptoms. Some symptoms may take years to show up. Some of the effects can be short-term while other effects can be long term or permanent. Opening the blood-brain barrier allows toxins into the brain that cause a wide range of ailments - many of which are currently unknown or poorly understood