According to the FDA, tobacco naturally contains several harmful chemicals, including but not limited to: Nicotine Lead Cadmium Nitrates Trace fertilizers The FDA reports that these natural chemicals can be harmful if ingested, smoked or chewed, stating that as the plants grow, the concentration of harmful chemicals builds up and concentrates in the leaves
Horn believes that giving up the cigarette habit is now occurring at increasing rates in the adult population generally, and that it is occurring at significant levels among women as well as among men (although women smokers appear to have a harder time quitting than men), and also among younger adults, although there seems to have been a slight increase in the smoking rate among teen-agers during the last two years
However, Champix and varenicline contain the same active ingredient, in the same dose, and both work in exactly the same way
This implies that we do not know how representative our sample is for the general population