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  Nicotine vapes and two drugs called varenicline and cytisine were found to be the stop-smoking aids most likely to help people quit.
  Experts agree that all else being equal, it is better to vape than to smoke traditional cigarettes, but e-cigarettes come with their own risks.
  Smokers who quit, particularly at young ages, show much lower mortality rates than those who continue smoking.
  Officials have more evidence that a chemical called vitamin E acetate is playing a role in the recent vaping outbreak, which has sickened thousands of Americans.
  When comparing the dangers of e-cigarettes to cigarettes, some experts believe the health risks of e-cigs are not as serious as those from cigarettes.
  A teen in Canada may be the first person to develop "popcorn lung" due to vaping, according to a new report.
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