does tobacco cause lung cancer How Do Cigarettes Cancer? The harmful chemicals in smoking
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 Smoking is the most preventable cause of cancer Eurolab Cancers linked to tobacco use make up 40% of all cancers diagnosed in the United States CDC Online Newsroom CDC Smoking causes lung cancer Mauritius
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