Wireless Phones Elevate Brain Chemical Levels

In that wireless phones emit low-intensity non-thermal microwave radiation, Fredrik Soderqvist, from Orebro University (Sweden), and colleagues studied whether exposure to a mobile phone-like signal alters the integrity of the human blood-brain and blood-cerebrospinal fluid barriers.  The researchers conducted a provocation study that exposed 41 subjects to 30 minutes of GSM 890 MHz signal delivered to the temporal area of the head.  The team collected blood samples pre- and post-exposure, and found the subjects had elevated levels of transthyretin, a protein that is found in the blood-cerebrospinal fluid barrier that protects the brain against harmful foreign substances in the blood system.