My brother swears mine was caused by my cell phone. He is an engineer and is very experienced and knowledgeable on things like microwaves, radiation, etc. I was talking on the phone quite a bit for several months before I was diagnosed with oral cancer. Sometimes I'd talk so long that the phone would heat up my hand and make my ear and face hot. I haven't smoked in over 20 years and I don't drink. Who knows, it could have been a combo of things. I was under an enormous amount of stress for several years, which lowers the body's immune system. Take that and add in the microwaves from the cell phone and ZAP! I was not tested for HPV, but I wouldn't be surprised if that weren't also a contributing factor. I hate it when I see people wearing those little "blue tooth" gadgets on their ear! If cell phones ARE contributing to head/neck cancer, then I sure wouldn't want to wear one of those things on my ear all the time. They are constantly emitting microwaves! Now I always use an ear bud wire and plug it into my cell phone so my head won't be up against the phone all the time.