About 1 in 8 cancer cases worldwide are tied to these infections
An estimated 2.3 million new cancer cases worldwide in 2024 were attributable to infections, representing approximately 12% of the total global burden. A study published in The Lancet Oncology and analyzed by the International Agency for Research on Cancer (IARC) found that bacteria, viruses, and parasites can cause inflammation and cell damage that lead to malignancy. Most of these infection-related cancers are preventable, treatable, or detectable through increased vaccination, screening, and medical intervention.
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- ✓ Approximately 1 in 8 new cancer cases worldwide in 2024 were linked to infections.
- ✓ An estimated 2.3 million new cancer cases in 2024 were attributable to infections.
- ✓ Infection-related cancers accounted for around 12% of all new cases globally in 2024.
- ✓ Many of the infections that lead to cancer are preventable, treatable, or detectable.
What changed
The International Agency for Research on Cancer released a new analysis quantifying infection-driven cancer cases for 2024.
Live updates
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Infections Linked to 1 in 8 Global Cancer Cases in 2024
An estimated 2.3 million new cancer cases worldwide in 2024 were attributable to infections, representing approximately 12% of the total global burden. A study published in The Lancet Oncology and analyzed by the International Agency for Research on Cancer (IARC) found that bacteria, viruses, and parasites can cause inflammation and cell damage that lead to malignancy. Most of these infection-related cancers are preventable, treatable, or detectable through increased vaccination, screening, and medical intervention.
Why it matters
The IARC, the specialized cancer research agency for the World Health Organization, examined 12 specific infections known to cause cancer. This research shifts the focus from traditional risk factors like aging and genetics toward preventable biological triggers. Reducing these infections could significantly lower the global cancer rate.
What is confirmed
- Approximately 1 in 8 new cancer cases worldwide in 2024 were linked to infections.
- An estimated 2.3 million new cancer cases in 2024 were attributable to infections.
- Infection-related cancers accounted for around 12% of all new cases globally in 2024.
- Many of the infections that lead to cancer are preventable, treatable, or detectable.
- The International Agency for Research on Cancer analyzed 12 infections known to cause cancer.
What to watch next
- Identification of the five specific infections linked to the majority of these cases
- Implementation of updated global vaccination and screening protocols based on IARC data
confidence 100%Sources used for this update (21)
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- welltica.com — 1 in 8 cancers worldwide were caused by these infections
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