how does smoking cigarettes cause lung cancer Cigarette Is the Main of The harmful chemicals in smoking
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 Cigarettes Cause Lung Cancer How Quitting Smoking Lowers Lung Cancer Risk and Other Illnesses What You Need to Know About Smoking and Lung Cancer
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