Despite the best intentions of the health lobby, smoking rates in the U.S. have now remained level for five years.
One in five Americans still smokes, a statistic that hasn't changed since 2005. Before that, the rate dropped every year for four decades. Why has the decline in smoking rates stalled?
Source:
http://theweek.com/article/index/206974/why-america-cant-stop-smoking-5-theories
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