Metabolites of candida, in increased concentrations, can be toxic, and whole body effects from intestinal overgrowth should be expected. People with demonstrable candida overgrowth can be treated with the oral antifungal antibiotic, Nystatin. At the same time the underlying cause of candida overgrowth should be found and corrected. Dr. Crook's program became popular, and a commercial success, with many anti-candida products appearing in stores. The desire for a simple, single causes of mysterious illness is understandable in a world of complexity, confusion, and unresolved difficulties.
Yeast are a highly specialized sub-group and have little in common with molds an d other fungi.
Each fungus should be considered on its own merits and demerits. Immune responses to fungi are very specific - not generalized across a broad spectrum on fungi. They cause illness by varied and diverse mechanisms. Immune responses to different fungal antigens tend to different. Cross reactions may exist, but generally these interactions are unknown.