Scientists have found genetic variations that make people more likely to get hooked on cigarettes and more likely to develop lung cancer. This new finding could lead to screening tests and customized treatments being developed for smokers that want to quit smoking. It also gives more insight on how genetics and lifestyle habits work together to cause cancer.
A person that smokes that inherits the genetic variations from both parents has an 80 percent greater chance of lung cancer than a smoker without the variations. The same smoker would light two extra cigarettes a day on average and have a harder time quitting than smokers that don’t have the variations.
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