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My uncle-farmer-85-from village-no pollution-veggie-nonsmoker,dia… lungcancer-5dayago. What is the cause? - lungcancer

I think it's hard to say what the exact cause. If your uncle is 85, has outlived most of the people, and with the right treatment can be much longer to live. Now help the right treatment is much more important than trying to specify the exact cause. I doubt that few, if any, could be cancer, researchers say that in a certain way.

Good luck to you and your uncle. Both live a long life.