why does cigarette smoking cause lung cancer What You Need to Know About and 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 Cigarette Smoking Is the Main Cause of Lung Cancer HealthXchange Smoking and lung cancer: What's my risk? Cigarettes cause lung cancer Lung 10 Harmful Effects of Cigarette Smoking on the Respiratory System
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