The 2024 global analysis puts a hard number on a risk people rarely connect to cancer. More than 2 million new cancer cases were caused by infections in 2024. That’s one in eight cancers worldwide.
The headline is not a scare story. It is a measurement of a preventable burden. The study, based on Global Burden of Disease 2022 data and published in 2024, estimates infection-attributable cancers by pathogen, region and cancer type. The finding matters because it shifts attention from genetics and lifestyle alone to a clear infectious driver that can be vaccinated against, screened for and treated.
Public health has long focused on HPV. The data says the biggest burden comes from elsewhere. That misconception costs lives.
💡 Frequently Asked Questions (FAQ)
- Q: How many cancers in 2024 were caused by infections?
- A: More than 2 million new cancer cases in 2024 were infection-attributable, accounting for one in eight cancers worldwide.
- Q: Is HPV the biggest infectious cause of cancer?
- A: No. The 2024 analysis shows the largest infection-attributable cancer burden comes from pathogens other than HPV, challenging the common misconception.
- Q: Can infection-related cancers be prevented?
- A: Yes. Many infection-related cancers can be prevented or reduced through vaccination, screening, and treatment of the underlying infectious agents.