No Safe Smoke

摘要

Public-health experts are debating whether e-clgarettes, which deliver nicotine in a smoke-free vapor, can help eradicate tobacco smoking. Research around this topic is sparse, but one new, relatively small study raises questions about whether e-cigarettes can wean tobacco smokers off their deadly habit. The study In JAMA Internal Medicine looked at 949 tobacco smokers-88 of whom also used e cigarettes-and found that smoking e-cigs did not help them quit or reduce their use of cigarettes over the course of a year.