How does long term exposure to base stations and mobile phones affect human 3 hormone profiles?

and safety for humans continuously exposed to radio frequency 51 radiation. 52 Design and methods 53 Study subjects 54 This study was conducted for 6 years on 82 mobile phone volun-55 teers with age ranges 14-22 years (n = 41) and 25-60 years 56 (n = 41). Those users were divided into three subgroups according 57 to the time of their exposure to RFR: (weak n = 19), (moderate 58 n = 9), and (strong n = 13) per day, in addition to 20 negative control 59 subjects. 60 On the other hand, volunteers exposed to RFR emitted from base 61 stations (n = 34) were selected with age ranges 14-22 years 62 (n = 17), and 25-60 years (n = 17) and living at distances 20-100 m 63 and 100-500 m apart from the base station. Additional 10 subjects 64 of each age range living at a distance more than 500 m apart from 65 the base station were considered as negative control group