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The main chemical in tobacco is nicotine, a stimulant, which causes your. heart to beat more rapidly. This causes weight loss and cigarettes also may ...

www.cedu.niu.edu/~shumow/iit/AdolescentSmoking.pdf

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Nicotine in small amounts is a stimulant, while in large quantities is a depressant.

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13y ago
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Q: Is nicotine a stimulant or depressant?
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