does smoking cigarettes cause lung cancer What are the causes and
What are the causes and risk factors of lung cancer Preventing Chronic Disease: April 2007: 06_0024 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 HealthMatch Smoking and Lung Cancer: How Big is the Problem Today? According to the CDC, cigarette smoking is the No. 1 risk factor linked to lung cancer. It accounts for 80 to 90% of lung cancer related deaths. However, early detection means more options
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