do u gotta be 18 to smoke cigarettes SmartSign 14" x 10" Funny 'Please Not Drop Your Cigarette Butts On The Ground One hell of a pack.

The purpose of this study was to evaluate the nicotine delivery potential of a new-generation EC devices in a group of smokers with no previous experience in EC use compared to a group of experienced vapers and to examine the association between nicotine absorption and puffing topography

It concluded from this that e-cigarettes are not undermining, and may even be contributing to, the long-term decline in cigarette smoking

Still, there are situations that should never be ignored

45 The findings that dual users of cigarettes and e-cigarettes have worse HRQoL than 5-year cessation may reflect the fact that these persons tend to be heavier, more dependent smokers 46 compared to 5-year cessation, many of whom may not have been heavy cigarette smokers to begin with