Another thing that seems to be a major culprit in ear tumours is emf, specifically Cell Phone s and even worse are portable phones. It literally cooks the auditory nerves. If you must use a Cell Phone there are decices that can make the waves coherent and less harmful. Let me know if you need some recommendations. As far as the portable phones, just don't use them....get a phone with a cord. The emf pollution is a sleeping giant that will make the tobacco industry look like boyscouts. Just thought I'd mention this to you.