The World Health Organization (WHO) released a landmark study today ahead of World Cancer Day, revealing that nearly four out of ten cancer cases worldwide could be prevented. The analysis identified 30 preventable causes, with tobacco use remaining the leading factor, responsible for 15% of all new cases.

For the first time, the study also highlighted the significant role of nine cancer-causing infections, such as HPV and Hepatitis B, which account for 10% of cases. The findings suggest that with better air quality, vaccination programs, and lifestyle changes, millions of lives could be saved annually.

The burden of preventable cancer was found to be significantly higher in men (45%) compared to women (30%), largely due to higher rates of smoking and alcohol consumption. Health ministers worldwide are now being urged to implement stricter regulations on pollutants and carcinogens to lower long-term healthcare costs.