Letter from North America

摘要

Despite the widespread awareness of tobacco smoking and its harmful effects, a new form of smoking, electronic cigarette (e-cigarette), is on the rise worldwide. In an attempt to invent an alternative method for smoking cessation, Hon Lik invented the e-cigarette. E-cigarettes in the market are a diverse range of battery-powered devices that vaporize nicotine for inhalation. Currently, there are 2.5 million e-cigarette smokers in the USA. Sales are increasing rapidly and are predicted to surpass traditional cigarette sales within a decade. E-cigarette users report buying them to help quit smoking, reduce traditional cigarette consumption, relieve tobacco withdrawal symptoms and to continue to have a 'smoking' experience but with reduced health risks. The role of e-cigarettes in smoking cessation is controversial. Some studies suggest that e-cigarettes have the potential to deliver nicotine into the bloodstream, lessening the desire to smoke and tobacco withdrawal symptoms. Contrary to belief, e-cigarettes, with or without nicotine, have shown a modest effect at helping smokers quit. Further research evaluating the potential for long-term use and efficacy of e-cigarettes is needed.