The new research also found an increasing amount of young people abstaining from substances altogether.
The study sheds light on the little-understood chemicals left behind years after a cigarette has been put out.
Federal health officials hope the move will lower number of new smokers and reduce rates of smoking-related deaths.
Public health officials argue that onscreen smoking motivates teens to use tobacco.
The upper house of parliament is pondering an EU directive on tobacco branding.
Two large studies found that smoking is the cause of 20 percent of all adult male deaths in the country.
Thousands of farmers abandoned traditional staples like maize, sorghum and groundnuts for tobacco, a cash crop thought of as "green gold."
Nearly one-quarter of Thai adults smoke cigarettes.
The House of Lords passed the bill despite threats of legal action from tobacco companies.
Will a proposed ban on the sale of tobacco within the tiny town of Westminster become the nation's first?
The maker of Camel cigarettes will phase out smoking at desks and in elevators, hallways, offices, and conference rooms
Students at Georgia’s public colleges and universities have mixed feelings about a smoke and tobacco ban that will go into effect Wednesday
P.S. marijuana is still cool, though
The EU is asking tobacco firms to do more to track and trace their goods, but tobacco companies say they're already tracking their product
Louis W. Sullivan says tobacco companies put their profits ahead of the health of the American people