The extent of toxicity varies considerably across different brands of smokeless tobacco (ST) products and data suggest that greater toxicity may result in greater health risks. However, little is known about the actual extent of exposure to toxicants from current smokeless tobacco products and factors that might moderate the extent of this exposure. The goals of this project are to address the following questions: 1. What are the characteristics of the range of smokeless tobacco products in current use and how do these products impact user behavior; 2. What are novel and the best measures of smokeless tobacco use, behavior and exposure; and 3. What are some of the determinants of smokeless tobacco use.
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Extent of Toxicity: Mean of Median Values of NNK+NNN in 7 Smokeless Tobacco Brands
Timeframe: Three "usual" dip sized samples were collected from subjects at baseline