Virginia Livingston

Virginia Livingston (1906–1990) was an American physician and cancer researcher who advocated the unsupported theory that a specific species of bacteria she named Progenitor cryptocides was the primary cause of cancer in humans. Her theories about P. cryptocides have not been duplicated by researchers, and a clinical trial of her therapy did not show any efficacy in the treatment of cancer. The American Cancer Society, which did not support Livingston's treatment protocol for cancer, categorically denied her theory of cancer origins.