New analysis from the World Health Organization (WHO) suggests a significant portion of cancer cases are preventable through lifestyle changes. The report indicates over one-third of all cancer diagnoses globally could be avoided.
In 2022, nearly 19 million new cancer cases were recorded worldwide. Approximately 37% of these, totaling 7.1 million, were linked to changeable risk factors. While 30 risk factors were identified, three major drivers stood out, with two directly addressable through behavior modifications.
Smoking tobacco remains the single largest preventable cause of cancer, accounting for 15% of all global cases in 2022. This habit is particularly impactful for men, contributing to nearly 23% of new cancer diagnoses in that demographic.
Infections represent the second-leading preventable cause, responsible for 10% of new cases. Human papillomavirus (HPV) is a major driver of cervical cancer in women, while Helicobacter pylori infections are linked to stomach cancer.
The third significant preventable factor is alcohol consumption, attributed to 3% of all new cancer cases globally. Even moderate drinking can increase cancer risk, emphasizing the benefit of reduction or abstinence.
These findings underscore the power of behavioral changes in preventing lung, stomach, and cervical cancers, which comprise nearly half of all preventable cases. While genetics and environmental factors are beyond individual control, managing modifiable habits can substantially improve health outcomes.