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While legislation has restricted other single-use plastics like bottles, bags and straws, cigarette filters have largely escaped such regulatory attention

Smokers produce less saliva, hence, have less ability to neutralize refluxed acid

Hookahs have become particularly popular among urban youth, young professionals, and college students

"If it wasn't going to make a difference the tobacco companies wouldn't have spent so many millions of dollars to try and block it," he said

Premium brands have maintained their dominance in the market over the past decade, actually gaining market share throughout the 1990s (Bulow and Klemperer 1998)