"The 'holy waters' at Lourdes, known world wide for their healing properties contains large amounts of germanium." 46 Germanium is necessary to maintain a strong immune system. Dr. Azuhiko Asai, of Tokyo, Japan, who discovered the nutritional properties of germanium, was able to connect the healing properties of certain herbs to relatively high levels of germanium. Germanium is known to enhance the immune system by stimulating production of natural killer cells and T-suppressor cells. "Organic germanium has proven successful in dealing with pathologies including asthma, diabetes, hypertension, cardiac insufficiency, inflammation of maxillary sinus, neuralgia, leukemia, softening of brain tissues, myoma of the uterus, neurotic disorders, nephritis, hepatic cirrhosis and various cancers (breast, lung, bladder, larynx) according to the research findings of Dr. Asia." 47 Researchers in Russia found that germanium could be attributed to anti-cancer activity.