how does tobacco cause lung cancer Cigarettes Tobacco and Cancer | Cancer

Tobacco and Cancer Cancer CDC 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 is one of the leading causes of lung cancer and every cigarette harms your lungs more than you realize. Tobacco smoke contains harmful chemicals that damage lung cells over

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