do cigarettes have carcinogens Cigarette smoke components and their pathological effects: Cigarette How does smoking cause cancer?
How does smoking cause cancer? Cancer Research UK Chemicals in Cigarettes and Tobacco: What's Burning? 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 contain 7 human carcinogens: report The Korea Herald
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