how does smoking cigarettes cause lung cancer 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 Stopping smoking could halt further damage to lungs CRUK CC What You Need to Know About Smoking and Lung Cancer Winter Lung Cancer Causes: Indoor Air Pollution and 7 Other Dangerous Risk Factors of Lung Cancer Smoking is the number one cause of lung cancer. It causes about 90% of lung cancer cases. Tobacco smoke contains many chemicals that are known to cause lung cancer. If you still Did you know? According to the CDC, about 80 90% of lung cancers are linked to smoking. That means giving up cigarettes can significantly drop your chances of developing lung cancer. It doesn't

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