Main findings:

- Headache had at least sometimes limited usual daily activities for 12 % of the study participants and about 24 % had been bothered by light when having a headache. On average 15 % considered their health being fair or poor. In addition, participants reported any symptoms occurring in relation to mobile phone use. Almost 10% of the respondent reported headache, 15% tinnitus and 10% partial hearing loss in conjunction with mobile phone use (always, often or sometimes vs. never). Nausea was the least common (3%) and burning sensation in the ear was the most common symptom (49%).

- Two positron emission tomography (PET) studies were conducted to investigate the effects of mobile phone radiation on brain glucose metabolism and cerebral blood flow (CBF) using fluorodeoxyglucose ([18F]FDG) and radioactive water ([15O]H2O), respectively. The main finding of the FDG-PET study was that the brain glucose metabolism was significantly reduced in the temporoparietal junction and anterior temporal lobe of the exposed (right) hemisphere. The SAR value during the exposure was 0.25 W/kg.

- In the adult group, the SAR value of 4 W/kg was used in the experiments. It is higher than the normal allowed maximum GSM SAR value of 2 W/kg, but clearly below the safety limits for RF exposures. During the exposure time of 20 min, a slight decrease in the blood flow indicators of the frontal area was found. This finding is in accordance with results of Turku University s Centre for Cognitive Neurosciences PET study. The ear canal temperature increased about 0.5 °C during the 20 min exposure time. The blood samples were taken only in the adult group before and after the session. The protein S100 B is mainly produced in the brain by astrocytes. and it has been suggested to serve as a screening tool of CNS injury. During the exposure the S100B concentration decreased significantly.

http://www.ttl.fi/en/publications/Electronic_publications/Documents/WIRECOM.pdf


Mona


Informant: Martin Weatherall



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