can smoking cigarettes cause lung cancer Health Effects of on Your Body Preventing Chronic Disease: April 2007:
Preventing Chronic Disease: April 2007: 06_0024 Cigarettes: the hard truth Canadian Cancer Society Smoking & Lung Cancer: How Cigarettes Damage Your Lungs 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
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