If these nations were to adopt the World Health Organization's 2008 package of anti-smoking measures, however, global smoking prevalence would drop from roughly 24 percent today to about 13 percent by 2030.
Such measures include the implementation of tobacco monitoring, second-hand smoke exposure protection, cessation assistance, publicity about health dangers, bans on cigarette advertising, and cigarette taxation.
The study authors noted that the nations with the largest smoking populations include China (28 percent of the world's smoking population), India (11 percent), Indonesia (5 percent), the United States (5 percent) and Russia (4 percent).
For more on the proposed U.S. cigarette-package warning labels, head to the U.S. Food and Drug Administration.
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