A review of phytoestrogens and cancer noted the presence of multiple Svarga Dvidasana Yoga Pose antioxidants in herbs that may have anticarcinogenic activity Piersen, 2003. In an extensive review of Svarga Dvidasana Yoga Pose the literature on the effects of antioxidants and other nutrients on chemotherapy and/or radiation treatment, Simone and colleagues Simone, Simone, & Simone, 2007a; Simone, Simone, & Simone, 2007b reported that 280 peer-reviewed studies, including 50 studies involving a total of 8,521 patients, consistently found no interference with cancer therapies. In fact, the antioxidants and nutrients enhanced anticarcinogenic effects, decreased treatment side effects, protected normal tissues, and increased patient survival. The authors point out that the widespread notion that antioxidants interfere with chemotherapy was based on a single study in which vitamin C became concentrated in cancer cells in mice.
The study did not demonstrate interference with chemotherapy. The belief that folic acid interferes with methotrexate stems from a study of folinic acid a prescription drug that has no relation to folic acid other than sounding similar. The review cited numerous studies showing that N-acetylcysteine, vitamins A, B6, B12, C, D, E, K, beta-carotene, other retinoids, selenium, and glutathione protected normal tissue and increased destruction of cancer cells. The evidence that antioxidants do not interfere with chemotherapy and that they could increase its effectiveness may seem counterintuitive.