What doesn't basis cancer?

What doesn't basis cancer?
death doesn't make happen it and is the only 100% cure.
uranus
I don't believe that anyone truely know what causes cancer. I assume it's a lot of speculation. There are masses people who haven't smoked and gotten lung cancer. If they can find out what does indeed basis cancerous cells, after you'd think they would be capable of find a way to cure it.
Clean nouns,fresh fruits and vegetables thoroughly washed,and purified marine.