Bioeffects of mobile telephony radiation in relation to its intensity or distance from the antenna

Purpose: To examine the bioactivity of GSM 900 and 1800 (Global System for Mobile Telecommunications) radiations, in relation to the distance from the antenna or to the radiation-field intensities. Materials and methods: Drosophila melanogaster adult insects were exposed to the radiation of a GSM 900/1800 mobile phone antenna at different distances ranging from 0 to 100 cm, and the effect on their reproductive capacity and cell death induction in the gonads by the use of TUNEL (Terminal deoxynucleotide transferase dUTP Nick End Labeling) assay, was studied. Results: These radiations/fields decreased the reproductive capacity by cell death induction, at all the different distances tested. The effect diminished with the distance/decreasing intensities. An increased bioactivity 'window' was revealed at distances of 2030 cm from the mobile phone antenna, (radiation intensity around 10μW/cm²) where the effect became highest, in relation to smaller or longer distances. The effect diminished considerably for distances longer than 4050 cm and became not evident for distances longer than 1 m or radiation intensities smaller than 1μW/cm². Conclusions: GSM bioactivity is highest for intensities down to less than 10μW/cm² and still evident until 1μW/cm² exhibiting 'window' effects. (authors)