how cigarette smoking causes lung cancer Cigarettes Cigarette Smoking Is the Main
Cigarette Smoking Is the Main Cause of Lung Cancer HealthXchange According to the American Cancer Society (ACS), smoking is the leading cause of lung canceraccounting for about 80% of lung cancer deaths in the U.S. Exposure to secondhand smoke, radon, and certain The harmful chemicals in smoking directly damage lung cells, causing DNA mutations that increase cancer risk. Over time, these damaged cells grow abnormally, leading to tumor formation in the lungs. Quitting smoking Pictures Better Than Words For Scaring Smokers off Cigarettes
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