1.   Since those are all associated with nicotine withdrawal, however, they could have been attributed to a lack of smoking and a lower nicotine intake.

2.   That filler consists of crushed tobacco leaves and stems, and has a lower nicotine content than pure tobacco.

3.   The lower nicotine content results because Philip Morris removes the nicotine when it manufactures the filler.

4.   The nicotine is absorbed through the mouth and not into the lungs, and the device helps lower nicotine levels and encourages smokers to quit, they said.

5.   The nicotine is absorbed through the mouth and not into the lungs, and the device helps lower nicotine levels and encourages smokers to quit.