does cigarette smoking cause lung cancer How cancer? Tobacco Awareness and Prevention -
Tobacco Awareness and Prevention Roane State Community College The harmful chemicals in smoking directly damage lung cells, causing DNA mutations that increase cancer risk. Over time, these damaged cells grow abnormally, leading to tumor formation in the lungs. Quitting smoking How Quitting Smoking Lowers Lung Cancer Risk and Other Illnesses Smoking Cigarettes Causes Lung Cancer
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