IMO, there is no doubt that yeast can wreak havoc on our bodies. I know, personally two people who died of cancer and many other ailments that the families were told that their body was full of yeast. Hey, we all have yeast. And I think if you do have yeast overgrowth, you need to take measures to keep it under control, but I don't really think there is an absolute cure, once your body has gone through yeast overgrowth. It is just finding something that works for you to keep it under control.
You all should read some of the stuff written by Jon Barron. I love what he has to say about health in general and optimizing our bodies.