Study Finds Nearly 40% of Global Cancer Cases Linked to Preventable Risks

A global study published in Nature Medicine estimates that nearly 38% of the 18.7 million new cancer cases in 2022 were linked to modifiable risk factors. Tobacco smoking was the largest contributor, responsible for about 15% of cases, followed by infections and alcohol consumption. The analysis covered 30 risk factors across 185 countries, highlighting differences by sex and region. The findings suggest that many cancers could be prevented through public health measures and lifestyle changes.