Hey Natway, I'm not going to go into a big debate with you about the whole debunking candida thing, the fact is candida overgrowth, parasites and low-grade bacterial infections are extremely common regardless of whether or not mainstream medicine recognizes and accepts this as true. I have done enough research on clinical studies of candida growing in the body to know it is a real thing.
I do agree with you however that the true underlying cause of candida and other imbalances is malnutrition is some way. The real cause for candida and many other diseases is stress in the body that leads to a suppressed immune system, causes the digestive system to become week, the body goes into a state of excess cold and not enough warmth and this allows all types of candida and bacteria to grow and florish when it would otherwise be kept in check, undigested food enters the intestine and feeds candida and it does spread to other parts of the body, haven't done enough research to know if it can invade the bloodstream and what-not, someday I will really do detailed study of things like this but I am focusing on other things for now. And yes I completely agree with you that the majority of symptoms that people relate to candida are not actually caused by the candida but by the underlying imbalances. Headaches, constant fatigue, brain fog, many other symptoms people complain about are really caused by stress in the body first, then candida grows also increases the stress even further and cycles out of control in this way.
In order to correct all of this, we have to go back to the source and remove the stress from the body and allow the immune system to go back to functioning, allow the digestion to destroy all pathogens in the body. Just eating enough calories is not enough to do this, just eating high-carb low fat is not enough to do this in all cases (some people will be helped by this), each person will have a different diet and possibly herbs to correct these problems.