does the tar in cigarettes cause cancer from - Stock Image - M870/0094 Tar | PPTX
Tar PPTX A Year's Worth of Tar Model 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 What Happens When You Smoke? Cigarettes contain nicotine, tar, and carbon monoxide. Short term effects: Increased heart rate Higher blood pressure Reduced oxygen Long term effects: Lung cancer
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