Although the percentage of American adults who smoke has hovered at about 20 percent since 2004, people are smoking less, according to a new study by the Centers for Disease Control and Prevention.
The CDC’s conclusion was based on figures showing declining sales of cigarettes. Sales fell by more than 20 percent from 2004-2009, thanks in part to a federal cigarette tax increase, according to the Alcohol and Tobacco Tax and Trade Bureau.
The analysis by the CDC didn’t indicate to what extent counterfeit and smuggled cigarettes, a growing factor in recent years, contributed to the declines in reported cigarette sales.
Americans are also less likely to be exposed to secondhand smoke, according to a second CDC report. The percentage exposed to secondhand smoke — those exposed to enough smoke to show up in their bloodstream — declined by more than 20 percent between 1999 and 2008. Still, four in 10 non-smokers were exposed to secondhand smoke in 2007-2008, including more than 50 percent of children ages 3 to 11.
Marie Cocco, a spokeswoman for Campaign for Tobacco-Free Kids, says the studies indicate that methods to curb smoking, including bans on smoking in some areas, work but need to be strengthened and more widely adopted.

