why does cigarette smoking cause lung cancer The harmful chemicals in 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 Smoking Effects on Lungs -

Smoking Effects on Lungs Types of Smoke Impact on Cancer Lung A vaccine to stop lung cancer? It's made from tobacco taxes and legislation #DYK? Cigarette smoking causes about 80% to 90% of lung cancer deaths in the United States and can lead to respiratory diseases like COPD. Protect your lung health by quitting smoking. Learn more at

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