does cigarette smoking cause lung cancer If you were asked about

If you were asked about tobacco and cancer, you might think of lung cancer. It's true that smoking cigarettes and being exposed to other people's cigarette smoke cause almost 9 of every 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 Give It Up: Cutting back helps, but even a cigarette or two a day carries risks 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 what in cigarettes causes lung cancer Smoking causes lung cancer Social Smoking Damages Your Lungs Almost as Much as Heavy Smoking

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