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 Cigarettes release toxic chemicals like
Cigarettes release toxic chemicals like carbon monoxide and lead The Content Science Education Enhances Knowledge (SEEK) Active Smoking COSH What is Tar from Smoking? A Year's Worth of Tar Model
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