how does cigarette smoke cause lung cancer The harmful chemicals in smoking directly damage cells, causing DNA mutations that increase risk. Over time, these damaged cells grow abnormally, leading to tumor formation in the lungs. Quitting smoking π World No Tobacco Day:
World No Tobacco Day: Choose Health, Not Tobacco Tobacco use is a risk factor for several types of cancer, including cancers of the lung, mouth, throat, esophagus, pancreas, bladder, and stomach. Preventing Chronic Disease: April 2007: 06_0024 Smoking A Pack Of Cigarettes A Day Causes 150 Mutations A Year In Every Lung Cell IFLScience How Do Cigarettes Cause Cancer? Memorial Sloan Kettering Cancer Center
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