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 How Smoking and Nicotine Damage
How Smoking and Nicotine Damage Your Body FV Hospital Tobacco and Cancer Cancer CDC Tar from cigarettes Stock Image M870 0094 Science Photo Library Cigarettes release toxic chemicals like carbon monoxide and lead Carbon monoxide & tar PPTX What chemicals are in a cigarette? What does smoking do to your body? Cancer Research UK
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