[ted_dunning]

Actually quite a lot of diseases have cures. Many have very low cost cures or prevention.

And cancer isn't one disease. It is hundreds. Many of which have cures.

Diabetes was much harder to understand (and also isn't a single disease). Recent results have demonstrated islet cell transplants in type 1 that don't require life-long immune suppression. That isn't wide-spread yet but it is promising.

An interesting example of an actual cure is ulcers. Most humans who gets ulcers get them because of bacterial infection with H. Pilori. Killing that infection cures the ulcers. That didn't used to be possible because the cause wasn't understood.