Is there research to back up these health claims?

There is an extensive literature (some 300 books and research papers) dealing with the analysis of Kombucha Tea and its therapeutic effects. The independent medical research has been conducted principally in Russia and in Germany over the whole of the 20th century. Among early reports were those listing the benefits of Kombucha for stomach, digestive and intestinal disorders. One of the most famous of the later researchers was Dr. Rudolf Sklenar of Oberhessen who recognized the detoxifying properties of glucuronic acid in Kombucha for removing waste matter such as cholesterol and toxic deposits. He developed a biological cancer therapy based on Kombucha, and it is his recipe which is still generally used today and for the production of the commercially bottled brew. He became a champion for the remedy, which he found helped invigorate the entire glandular system and the metabolism. He successfully treated arthritis, constipation, obesity, arteriosclerosis, impotence, kidney stones, rheumatism, gout and significantly, cancer, especially in its early stages.