which component of cigarette smoke causes lung cancer Here's how the ingredients travel through the body — and wreak havoc 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 The Many Dangers of Tobacco Use UC Davis Biotechnology Program Health effects of smoking tobacco Wikipedia Health Risks of Smoking Tobacco American Cancer Society Lung Carcinogenesis by Tobacco Smoke PMC
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