The idea of having a yeast problem is a very complicated issue. It may be resolved with simple steps taken in diet supplementation ect. In other cases, it may not be the yeast which is the primary problem. As a matter-of-fact, the yeast may be there to protect you from some other thing such as a bacteria, or organ malfunction. It could also be a result of immune-system problem.
If there has been little success with health-style changes etc. I would suggest having your immunglobulins tested.
A true and rare candida over-growth {gut}will result in alchohol inebriation. This is where the sugar-reduction is most essential.

I have learned recently from my dad, that when my mother was pregnant with me, she was on some experimental Antibiotics , that was 1963. This may have caused an innate immune-system disorder affecting a cytocine or something. Who knows?
I think if you are chronically infected, we might have to wait and see what medical advances can help us obtain accurate diagnostics. Shroom