I have my thoughts on this OC and it seems to be a fairly new disease. So that in itself would eliminate a lot of the causes you listed. People were raised for years on a lot of the things you stated and many years ago. I had one Great grandma live to be 108 and another Great that made 96. My mind has HPV right at the top of the list because sex was mainly between a husband and wife with no fill ins. The 96 yr old one smoked a corn cob pipe daily. I am 72 and 3/4 and will be 73 in Feb so I have been around for a few years myself.

Since posting this. UPMC, Pittsburgh, Oct 2011 until Jan. I averaged about 2 to 3 surgeries a week there. w Can't have jaw made as bone is deteroriating steaily that is left in jaw. Mersa is to blame. Feeding tube . Had trach for 4mos. Got it out April.
--- Passed away 5/14/14, will be greatly missed by everyone here