Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco
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In 2005, approximately 2.3% of U. S. adults used smokeless tobacco. Moist snuff leads all types of smokeless tobacco in revenues and marketing expenditures. ⋯ The study findings indicate that moist snuff brands varied widely in content of rapidly absorbed, addictive un-ionized nicotine (500-fold range) and of carcinogenic TSNAs (18-fold range). Product characteristics such as packaging and moisture content appeared to be correlated with concentrations of un-ionized nicotine, and flavor characteristics of low-priced brands may correlate with TSNA concentrations. These findings warrant further study in light of (a) the marketing of smokeless tobacco for use in places where smoking is prohibited, (b) the promotion of smokeless tobacco as a harm-reduction product, and (c) the ever-expanding number of highly flavored smokeless varieties brought to the market.
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The extent of concurrent use of cigarettes and one or more other tobacco products (polytobacco use) is important to explore because users may be at an increased risk for adverse health effects and nicotine dependency. We determined national population estimates of current cigarette and current polytobacco use for at least 50,000 students from the 2002 and 2004 National Youth Tobacco Surveys. We identified which tobacco products were most often used in conjunction with cigarettes and used multivariate analyses to identify factors associated with polytobacco use. ⋯ Among current cigarette smokers using one other tobacco product, cigars or smokeless tobacco were the most frequently used products. In multivariate analysis, polytobacco use was associated with being male; being in middle school; residing in the Midwest, South, or West; being able to obtain cigarettes from a retailer; being subject to peer influence; having favorable beliefs about tobacco; being willing to use tobacco promotional items; being exposed to tobacco advertisements; and having higher levels of lost autonomy (an indicator of nicotine dependency). Youth interventions need to broaden their focus to address the use of all tobacco products, paying particular attention to adolescent males and youth living outside of the Northeast.
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Various brands and types of cigarettes were purchased at retail locations in southern California. Volatile gas samples were analyzed using multicolumn/multidetector gas chromatography. Results showed methyl chloride (CH(3)Cl) levels as much as four orders of magnitude higher than typical urban levels, about 30-500 ppmv (1.5-5.3 mg/cigarette), compared with about 500 pptv in urban air. ⋯ Environmental Protection Agency's maximum exposure limit of 200 ppmv. Light branded cigarettes tended to have higher CH(3)Cl levels than the heavier and filtered brands, possibly showing the dependence of cigarette packing on CH(3)Cl production. In addition, CH(3)Cl emitted from cigarette smoke may prove to be an important anthropogenic source of CH(3)Cl in the United States, at about 5%.