Hydrogen peroxide should not be used as a treatment for Candida infections, as the yeast actually thrives in hydrogen peroxide solution, according to the Journal of Clinical Microbiology. In this study, Candida in a solution of blood and 1-percent peroxide significantly replicated more than a blood solution alone over 24 hours.
Researchers suspect that pathogenic yeasts such as Candida are stimulated by the presence of oxygen, reports the Journal of Clinical Microbiology. Thus, hydrogen peroxide actually spurs Candida replication by increasing oxygen density around the yeast. This study also speculates that the yeast is protected from the free radicals and oxidation of the peroxide because the yeast uses specific cytochrome enzymes to neutralize them.
Dr. Jeffrey McCombs, developer of The Candida Plan, elaborates that the yeast actually produces hydrogen peroxide and is thus perfectly suited for living in a peroxide solution. In fact, using peroxide may worsen the condition, as peroxide helps change the benign form of the yeast into the pathogenic fungal version. The use of peroxide also kills off the beneficial obligate anaerobic bacteria in the mouth and gut. These bacteria are essential for digestion of complex molecules and also protect against infections like Candida because of competitive inhibition. An appropriate treatment of the yeast includes probiotics, such as Lactobacilli, and supplementation with fatty acids.