The top cancer risk was cigarette smoking, which accounted for 19 per cent of cancer cases in the study. Photo: Alamy

Lifestyle causes four out of 10 cancers in the US, new study finds

Smoking, bad diet and drinking alcohol are the top three triggers for the disease. Other research suggests a link between air pollution and smaller sperm, and links inflammation in middle age to dementia

Topic |   Health and wellness

TOP PICKS

The top cancer risk was cigarette smoking, which accounted for 19 per cent of cancer cases in the study. Photo: Alamy
READ FULL ARTICLE