One in eight cancers are likely caused by an infection worldwide – new study
Four viruses and one bacteria were responsible for 12% of the world’s cancer cases in 2024. Does this mean they’re preventable?
A new study by the World Health Organization reveals that approximately 12% of global cancer cases in 2024 are likely caused by infections. The research, published in The Lancet Oncology, examined the frequency and causes of cancer, identifying five primary pathogens responsible for more than 2.3 million new cases: Helicobacter pylori, HPV, hepatitis B, Epstein-Barr virus, and hepatitis C. These infections can lead to over 20 types of cancer, including stomach, liver, blood, and cervical cancers.
Viruses can cause cancer directly by altering host cell genes, indirectly by disrupting cancer control mechanisms, or by carrying oncogenes. Bacteria and parasites can also cause cancer through chronic infection, inflammation, and genetic mutations. While many cancers are preventable, low- and middle-income countries face significant barriers in access to preventative measures, with 75% of infection-related cancers occurring in these regions.
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Also reported by 3 other outlets
- One in eight cancers worldwide linked to infections, WHO agency says france24.com
- One in eight cancers are likely caused by an infection worldwide, new study finds medicalxpress.com
- One in eight new cancers are likely caused by infections—there’s an easy way to protect yourself scientificamerican.com
