The letter requests that the Attorneys General define electronic cigarettes as being cigarettes under the MSA and argues that doing so will bring electronic cigarette companies under the terms of the MSA, therefore placing severe restrictions on the advertising and marketing of these products.

"There's a lot we don't know about them."

Sadly, the agency concluded that it is not sure that e-cigarettes are any safer than tobacco cigarettes. The FDA states: "Many consumers believe that e-cigarettes are "safe" tobacco products or are "safer" than cigarettes. FDA has not made such a determination and conclusive research is not available."

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