Source:http://linkedlifedata.com/resource/umls/id/C1456702
MEDLINEPLUS: <p>Nearly a quarter of high school students in the U.S. smoke cigarettes. Another 8% use <a href='http://www.nlm.nih.gov/medlineplus/smokelesstobacco.html'>smokeless tobacco</a>. Smoking has many health risks for everyone. However, the younger you are when you start smoking, the more problems it can cause. For example: </p><ul><li> People who start smoking before the age of 21 have the hardest time quitting.</li><li> About 30% of youth smokers will continue smoking and die early from a smoking-related disease.</li><li>Teen smokers are more likely to use alcohol and illegal drugs.</li><li>They are more likely to have panic attacks, anxiety disorders and depression.</li></ul><p>Parents and other adults who work with children can help by warning them of the risks of smoking. They can also set a good example by not smoking themselves.</p><p style="font-weight:bold;font-style:italic;">Centers for Disease Control and Prevention</p>