Fact: People who assume that all of the health hazards of cigarettes will disappear in a puff of smoke when they quit are wrong. Many of the harmful effects of smoking are irreversible, meaning that they do not go away completely after a person quits smoking. Smoking for as short a time as five years can cause permanent damage -- to the lungs, heart, eyes, throat, urinary tract, digestive organs, bones and joints, and skin.
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