The answer is: True.
Nicotine in indeed an extrenely addictive substance. Nicotine is a substance that can easily become addictive, infact over 1,000 people daily become addictied to nicotine even if they tried smoking once. Nicotine effect's the whole body, but over time your body get's used to it the more and more nicotine is consumed. Nicotine is proven to be extreamly addictive, which makes it very hard for someone to quit conusming nicotine because there body basically start's needing nictotine because they have become used to the effects of nicitine.