When fungal candida gets out of control it can adapt to an acidic ph or an alkaline ph. An over alkaline ph in the gut can promote the "fungal" form of candida. Whereas, an slightly acidic environment keeps candida in its "yeast" form. "Acid"ophilus produces certain acids(butyric acid, acetic acid,and propionic acid) to keep candida from turning into its more pathogenic fungal form. Certain part of the intestines are suppose to be slightly acidic. Our flora produces certain acids in the colon that stimulates peristalsis. Being too alkaline can interfere with this process. Acid blockers and buffers have caused digestive issues for people. Its not to good too be too alkaline or too acidic. Balance is the key.