what chemical causes cancer in cigarettes Tobacco Smoke How does smoking cause cancer?
How does smoking cause cancer? Cancer Research UK Does Nicotine Cause Cancer? Dana Farber Cancer Institute 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 Cigarette smoking and lung cancer: chemical mechanisms and approaches to prevention ScienceDirect Smoking and cancer Fresh Exposure to Thirdhand Smoke Chemicals Surpass Health Risk Guidelines Thirdhand Smoke Resource Center
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