effects of cigarettes on lungs Smokers' vs. Healthy Lungs Smoking and its effect on
Smoking and its effect on the breathing system How smoking damages lungs and overall health Many people think smoking only on the weekends or at parties is harmless, but doctors warn there is no safe amount of tobacco. Find out how even occasional smoking damages your heart Have you ever seen what smoking actually does to the lungs? Healthy lungs are designed for efficient oxygen exchange, with intact air sacs, clear airways, and active cilia that help keep them YouTube
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