Candida Albicans is a type of yeast of fungus that occurs naturally in the human body. It is found in the gut flora, in skin folds, in the mouth and vagina. So normally found in the body at low levels. When the immune system is down, Candida starts to multiply and take over all the healthy microorganisms. They can find their way to the bloodstream too (through the lining of the intestinal tract) and it can lead to many problems.