does the tar in cigarettes cause cancer harmful chemicals smoking directly damage lung cells, causing DNA mutations that increase risk. Over time, these damaged cells grow abnormally, leading to tumor formation in the lungs. Quitting smoking What Is Tar in Cigarettes
What Is Tar in Cigarettes and How Does It Affect Health? Key Stage 3 Science: Student Book 1 by Collins Issuu The image of blackened lungs isn't a prop. It's the harsh reality of smoking. While healthy lungs are a pinkish color, cigarette smoke causes permanent, heavy staining from tar and other particulate Smoking: Effects, Risks, Diseases, Quitting & Solutions
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