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J Hum Hypertens 16 , 9196 (2002)

They have been pitched to adults as a less-harmful alternative to traditional cigarettes

The label on Nicorette gum, for instance, identifies it as a "stop smoking aid" that "reduces withdrawal symptoms, including nicotine craving, associated with quitting smoking." As far as the FDA is concerned, selling e-cigarettes as a competing form of nicotine replacement for smokers trying to quit (which is what they are) puts them in the same regulatory category as Nicorette: Claims related to smoking cessation have long been recognized as evidence of intended use conferring drug or device jurisdiction

But why did they start smoking in the first place