how does tobacco 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 The Many Dangers of Tobacco
The Many Dangers of Tobacco Use UC Davis Biotechnology Program Smoking and Lung Cancer Tips to Quit Smoking Health Effects of Cigarettes: Cancer Smoking and Tobacco Use CDC Cancer and Tobacco Use Smoking Cigarettes Causes Lung Cancer
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