In 2022, 7.1 million of 18.7 million global cancer cases were linked to preventable factors like tobacco, infections, and alcohol.

A new WHO study published in Nature Medicine finds that about 37.8% of the 18.7 million global cancer cases in 2022—roughly 7.1 million—were linked to preventable factors. Tobacco use caused 15% of cases, infections like HPV and H. pylori accounted for 10%, and alcohol contributed 3%. Lung, stomach, and cervical cancers made up nearly half of preventable cases. Men faced a higher burden (45%) than women (30%), largely due to smoking. Regional disparities exist, with infections driving most preventable cancers in sub-Saharan Africa. The WHO urges global action on tobacco and alcohol control, HPV vaccination, air quality, and healthier lifestyles to reduce cancer rates.