Secondhand smoke exposure raises oral cancer risk by 51%, meta-analysis finds

Oral cancers account for 228,389 deaths annually worldwide, with secondhand smoke exposure significantly increasing risk for non-smokers and children.

A new meta-analysis quietly confirms what many have long suspected: the harms of tobacco do not stop at the smoker's lips. Researchers from four countries, examining nearly 7,000 participants across multiple continents, have found that breathing someone else's smoke raises the risk of oral cancer by more than half — and that the longer the exposure, the deeper the danger grows. In a world where hundreds of millions of non-smokers and children inhale tobacco smoke involuntarily each year, this finding places an old public health question in sharper moral relief: who bears the cost of another pe

Secondhand smoke exposure raises oral cancer risk by 51%, meta-analysis finds

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