Brain Pathway Yields Clues to Cigarette Addiction - healthfinder.gov:
"TUESDAY, Aug. 5 (HealthDay News) -- New insight into how the brain processes the rewarding and addictive properties of nicotine sheds light on why some people seem to become addicted once they have their first cigarette, say Canadian researchers.
'Nicotine interacts with a variety of neurochemical pathways within the brain to produce its rewarding and addictive effects. However, during the early phase of tobacco exposure, many individuals find nicotine highly unpleasant and aversive, whereas others may become rapidly dependent on nicotine and find it highly rewarding. We wanted to explore that difference,' study leader Steven Laviolette, of the department of anatomy and cell biology at the Schulich School of Medicine & Dentistry, University of Western Ontario, said in a university news release."/.../
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