[legion]

I don't know that cancer can be cured.

From what I gather, cancer is simply when a cell divides and there is a mistake. Most "mistakes" die off on their own, but cancer is when the mistake replicates. The chances of a self-replicating mistake increase with age, and the bodies ability to kill mistakes decreases with age.

It seems to me that cancer is what will kill you when nothing else does. Eventually the mistakes pile up and overwhelm your body's ability to cope with them.

(This post was intentionally general--I know there are many more issues with cancer and many more causes.)