do cigarettes actually cause cancer Smoking and 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 What chemicals are in a cigarette? What does smoking do to your body? Cancer Research UK Can Smoking Cause Mouth Cancer? Switching from smoking to vaping dramatically reduces cancer risk Dr Colin Mendelsohn
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