Dr. Yumi Ishihara was the physician of a former prime minister of Japan. Born in 1948, Dr. Ishihara specialized in hematology in the Caucasus (Republic of Georgia), a region known for the longevity of its inhabitants. He also researched the latest natural remedies in Switzerland. He is currently the director of the Ishihara Clinic. He is recognized as the most easily comprehensible medical commentator.