Main causes of cancer – what triggers the disease and how to prevent it

A new WHO analysis based on 2022 data shows that 38% of nearly 19 million new cancer cases worldwide are linked to 30 modifiable risk factors. Smoking is the leading preventable cause (15% of all cases, 25% in men), followed by alcohol (3.2%). Lifestyle control can reduce risks.

A new analysis by the World Health Organization, published in Science Alert based on global data for 2022, shows that 38% of nearly 19 million new cancer cases worldwide are linked to 30 modifiable risk factors. Smoking remains the leading preventable cause, triggering 15% of all new cases (25% in men). Alcohol ranks second with 3.2% of cases (about 700,000 cases annually). The list also includes excess weight, lack of physical activity, ultraviolet radiation, air pollution, and hazardous occupational factors. The author emphasizes that lifestyle control can reduce individual risks, although genetics and age remain non-modifiable factors. The article is of an overview and educational nature, citing WHO data.