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The Scoop On Smoking from ACSH: what every teen should know about tobacco


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the bottom line

If you smoke a cigarette, harmful substances from cigarette smoke travel from your lungs into your bloodstream. When they get there, they tighten up the blood vessels so that less blood gets through. This decreases the amount of blood that reaches your cells -- and that's something that you don't want, since your blood contains nutrients that help to keep your cells healthy.

poor perfusion

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