can changing cigarettes make you sick 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 wondered what

Have you ever wondered what smoking actually does to your lungs? A healthy lung, like those from a non smoker, is pink, spongy, and full of air sacs that let oxygen pass into **This Is What Really Happens When You Smoke** Every puff of cigarette smoke delivers **more than 7,000 chemicals** into your body, including dozens that are known to cause cancer. The damage What it Means to be Nic Sick American Lung Association Secondhand smoke: Their cigarettes can make you sick The Nation's Health

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