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To explore the impact on respiratory health further, the researchers drew on information supplied by 2,090 participants in the Southern California Childrens Health Study

It may be a direct result of the body's reaction to the absence of a particular substance it has become dependent on

The report shows that Hollywood is perfectly capable of making movies without as much smoking and people still come see them, said the studys lead author, Stan Glantz, director of the Center for Tobacco Control Research and Education at the University of California, San Francisco

The decline among teens has been seized upon by vaping proponents, who argue it undercuts the gravest argument against the nicotine-emitting devices: that they act as a gateway to traditional smoking