cancer causing agent in cigarettes Health effects of smoking tobacco Cigarettes contain thousands of chemicals—over

Cigarettes contain thousands of chemicalsover 7,000 have been identifiedmany of which are toxic, and at least 70 are known to cause cancer. When a cigarette burns, these chemicals are inhaled deep Evidence update on the cancer risk of vaping e cigarettes: A systematic review 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 chemicals are in a cigarette? What does smoking do to your body? Cancer Research UK Cancers linked to tobacco use make up 40% of all cancers diagnosed in the United States CDC Online Newsroom CDC

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