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Published online 24 January 2001 | Nature | doi:10.1038/news010125-8
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Smokers get more than they bargain for
The tar and nicotine ratings shown on cigarette packets are a poor guide to what smokers actually suck up.
The tar and nicotine ratings on cigarette packets are unrelated to smokers' actual intakes. Whatever the type of cigarette they are smoking, smokers take in large amounts of nicotine simply by puffing harder.
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