I believe that while diet can be a contributing factor, it is not a main factor where cancer is concerned. Poor diet COUPLED with something else within that person adds up to cancer. If eating a low fat diet kept cancer away, then we wouldn't need a cure, now would we??
I truly believe that some people are genetically disposed to "getting" cancer. I believe it's why some can smoke two packs a day and avoid cancer and others cannot.

SCC Left Mandible. Jaw replaced with bone from leg. Neck disection, 37 radiation treatments. Recurrence 8-28-07, stage 2, tongue. One third of tongue removed 10-4-07. 5-23-08 chemo started for tumor behind swallowing passage, Our good friend and much loved OCF member Minnie has been lost to the disease (RIP 10-29-08). We will all miss her greatly.