how does smoking cigarettes cause lung cancer The harmful chemicals in 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 All Forms of Cigarette Smoke
All Forms of Cigarette Smoke Exposure are Harmful to our Cells and DNA Thirdhand Smoke Resource Center How Quitting Smoking Lowers Lung Cancer Risk and Other Illnesses Tobacco and Cancer Cancer CDC Smoking and its effect on the breathing system Cigarettes cause lung cancer Smoking is the most preventable cause of cancer Eurolab
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