smoking cigarettes cause lung cancer is the number one of cancer. It causes about 90% of lung cases. Tobacco smoke contains many chemicals that are known to cause lung cancer. If you still The Unbreakable Link: Tobacco and

The Unbreakable Link: Tobacco and Lung Cancer Does Only Smoking Cause Lung Cancer? Myths vs. Facts How does smoking cause cancer? Cancer Research UK Smoking is the major cause of COPD and lung cancer. Oxidants in Download Scientific Diagram 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

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