why does cigarette smoking cause lung cancer How smoke skews immune responses to promote infection, disease 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 Quit Smoking health harms worse than we thought, new ANU study of How does smoking cause cancer? Cancer Research UK
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