Dear Joe,
I'm really loathe to endorse this idea. Candida is a real fungus, yes. But the only people which get verifiable overgrowths of it are AIDS patients. They get fungal infections internally that a normal person's immune system would kill within seconds. These can kill you. As far as Candida actually causing low energy, brain fog, etc....I think that something like low thyroid would be more likely to cause it, and the characteristic cravings for sweets and salts that supposedly go along with Candida. The diets for it are pretty good, though. They get rid of alot of processed awfulness which could slow you down.
Peace
Homeskooled