WHO says nearly 40% of cancer cases are preventable

The WHO and IARC reveal that nearly 40% of cancers worldwide could be prevented by addressing causes like tobacco, infections, and alcohol, emphasizing the need for stronger prevention efforts.
Feb. 9, 2026

The World Health Organization (WHO) and its International Agency for Research on Cancer (IARC) have published a new global analysis revealing that almost 40% of cancer is preventable.

The report investigates 30 preventable causes of cancer and nine infections that can cause cancer. 7.1 million incidences of cancer in 2022 were linked to one of these causes. Additional key findings:

  • Tobacco, infections, and alcohol use were the top three preventable causes of cancer
  • Just about half of preventable cancer cases were lung, stomach and cervical cancer
  • Most cervical cancer was caused by human papillomavirus (HPV)
  • Men had higher incidences of preventable cancer
  • Smoking was the top preventable cancer cause in men, while infections were the top cause in women

WHO calls for enhanced prevention efforts to reduce preventable cancer burden worldwide.

About the Author

Erin Brady

Managing Editor

Erin Brady is Managing Editor of Medical Laboratory Observer.

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