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Smoking causes lung cancer New Zealand Cancer and Tobacco Use Vital Signs CDC Health effects of smoking tobacco Wikipedia 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 If you were asked to describe the relationship between tobacco and cancer, you might think of lung cancer. Its true that smoking tobacco products (including cigarettes and cigars) causes almost nine Smoking a small number of cigarettes can increase the likelihood of developing lung cancer. Lung Cancer, a disease that remains one of the deadliest forms of cancer worldwide is caused by the

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