Is it a myth or reality that there are numerous health implications of using bluetooth headsets.One of my friend keeps telling me about its bad aspect and I have also read somewhere that there are serious health threats of using wireless bluetooth headsets. Though i have read otherwise too. Are they really dangerous? I have been using them for over a year but i have not found anything wrong with me as far as my health is concerned. Do i really need to worry? Please guide me on this.