The devastating impact of cigarette smoke on the body’s DNA has been laid bare by the first comprehensive study into the damage tobacco inflicts on human cells. Some damage DNA directly, but others ramp up mutations in more subtle ways, often by disrupting the way cells function. The scientists spotted more than 20 mutational signatures in 13 types of cancer linked to tobacco smoking. It is thought to be caused by benzopyrene, a chemical found in tobacco smoke. Scientists hope that by understanding how the individual ingredients of tobacco smoke raise the risk of various cancers, they can develop new ways to prevent the disease.

Source: The Guardian November 03, 2016 18:00 UTC