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<img src="http://cdn1.medicalnewstoday.com/content/images/articles/317/317564/man-smoking.jpg" alt="Smoking causes a wide range of diseases. "  style="max-width:100%;"/><br><br><b>Smoking causes a wide range of diseases. </b><br><br>Smoking is responsible for more than 480,000 yearly deaths. Despite this, around 36.5 million U.S. individuals continue to smoke, and another 16 million live with a disease related to smoking. <br><br><a href="http://www.medicalnewstoday.com/articles/317564.php" title="Smoking causes a wide range of diseases. ">Harvard University in Cambridge, MA, explains the motivation for the research </a><br><br>