do cigarettes cause lung cancer The harmful chemicals in 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 What You Need to Know
What You Need to Know About Smoking and Lung Cancer Lung Cancer: Causes, Symptoms, Stages, Treatment, Prevention Your Body on Cigarettes: The First Drag to Lung Disease Preventing Chronic Disease: April 2007: 06_0024 Smoking WILL Cause Fatal Cancer!
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