what in cigarettes causes lung cancer The harmful chemicals smoking directly damage cells, causing DNA mutations that increase risk. Over time, these damaged cells grow abnormally, leading to tumor formation in the lungs. Quitting smoking Health Effects of Cigarettes: Cancer
Health Effects of Cigarettes: Cancer Smoking and Tobacco Use CDC 9 of the Worst Diseases You Can Get from Secondhand Smoke State of Tobacco Control American Lung Association Lung Cancer Treatment & Smoking Effects American Oncology Smoking causes lung cancer Mauritius
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