does tar in cigarettes cause cancer The 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 Marketed as a "healthier" choice,

Marketed as a "healthier" choice, "light" cigarettes now Linked to rise in lung cancer Roswell Park Comprehensive Cancer Center Buffalo, NY How smoking and vaping affect oral health An illustration depicting cigarettes and a pair of lungs affected by smoking. A number of respiratory disorders are causally linked to smoking, including asthma, chronic obstructive pulmonary disease, laryngeal cancer, lung cancer People ignorant of cancers caused by smoking

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