which component of cigarette smoke causes lung cancer Smoking - Back pack 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 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 Health effects of smoking tobacco Wikipedia Lung Carcinogenesis by Tobacco Smoke PMC
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