This is a linkpost for http://neurosciencenews.com/schizophrenia-nicotine-brain-activity-5995/
Might nicotine be doing a little mental good for people who aren't schizophrenics?
it's one of the few effective cognitive enhancers, so yes, except for the fact that people with a tobacco addiction are less intelligent than baseline when they haven't smoked in a while, so it may be a wash except for quite occasional users.