Gerson therapy is a controversial alternative treatment for cancer and other chronic diseases that involves a strict diet of organic foods, coffee enemas, and supplements. Synonyms for Gerson therapy may include natural cancer treatments, alternative cancer therapies, and holistic healing methods. Other related terms may include naturopathic medicine, integrative medicine, and complementary therapies. Many people who choose Gerson therapy do so as a last resort after conventional medical treatments have failed or they want to avoid the side effects of chemotherapy and radiation. While supporters claim that Gerson therapy can cure cancer and other diseases, medical experts warn that there is little scientific evidence to support these claims and the therapy can be dangerous if not supervised by a qualified healthcare professional.