The table reflects levels of nicotine and free nicotine in smokeless tobacco products in and Because nicotine levels were not calculated on dry weight, dry products are not entirely comparable to products with higher moisture content.
Differences can also be seen within categories. In general, chewing tobacco and dry snuff had low levels of free nicotine, while levels in moist snuff products were considerably higher. What does this mean for the smoker who switches to smoke-free products? There are no simple answers.
Inhaling smoke provides a bolus, or spike, of nicotine within seconds of the first puff, but the small amount is metabolized quickly. Some smokeless products are capable of delivering a similar peak level, but at a slower pace, and research shows that with smokeless products, the falloff from peak levels is much slower. The broad range of free nicotine levels among these products is good news for smokers.
They should look for a smokeless substitute that satisfies them. The same readings were In an editorial in the journal, Dr.
Scott L. Tomar of the Centers for Disease Control and Dr. Jack E. Henningfield of the National Institutes of Health said that there is a strong association between smokeless tobacco and cancers of the mouth and throat.
The authors said that the U. Dietrich Hoffmann of the American Health Foundation was the lead author in the study. Sections U. Science Technology Business U.
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