About 1 in 8 cancer cases are caused by infections with viruses, bacteria or parasites, a new study finds, suggesting that one of the most effective ways to reduce cancer rates might be to prevent common infections.In a new analysis published Sept. 28 in the journal The Lancet Oncology, researchers mapped the global impact of 12 cancer-causing pathogens. They estimate that infections drove about 2.3 million new cancer cases in 2024, or about 12% of all cancer cases diagnosed that year.The study highlights that a large fraction of cancer cases could be avoided if these underlying infections were prevented, Dr. Prashant Mathur, director of India's National Centre for Disease Informatics and Re...