Why is tobacco use addicting? The nicotine in tobacco acts as a stimulant, depressant, or tranquilizer depending on the dosage. An individual builds up tolerance to tobacco use, requiring larger doses to maintain a certain physiological effect. When the body becomes accustomed to the presence of nicotine, it then requires the chemical to function normally. This level of dependence is re

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Effects Roughly, health consequences, teen smokers, teen tobacco,