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The impact of tobacco additives on cigarette smoke toxicity: a critical appraisal of tobacco industry studies
Cigarette production involves a number of substances and materials other than just tobacco, paper and a filter. Tobacco additives include flavorings, enhancers, humectants, sugars, and ammonium compounds. Although companies maintain that tobacco additives do not enhance smoke toxicity and do not mak...
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Published in: | Cadernos de saúde pública 2017-09, Vol.33Suppl 3 (Suppl 3), p.e00132415 |
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description | Cigarette production involves a number of substances and materials other than just tobacco, paper and a filter. Tobacco additives include flavorings, enhancers, humectants, sugars, and ammonium compounds. Although companies maintain that tobacco additives do not enhance smoke toxicity and do not make cigarettes more attractive or addictive, these claims are questioned by independent researchers. This study reviewed the studies on the effects of tobacco additives on smoke chemistry and toxicity. Tobacco additives lead to higher levels of formaldehyde and minor changes in other smoke analytes. Toxicological studies (bacterial mutagenicity and mammalian cytoxicity tests, rat 90 days inhalation studies and bone-marrow cell micronucleus assays) found that tobacco additives did not enhance smoke toxicity. Rodent assays, however, poorly predicted carcinogenicity of tobacco smoke, and were clearly underpowered to disclose small albeit toxicologically relevant differences between test (with tobacco additives) and control (without tobacco additives) cigarettes. This literature review led to the conclusion that the impact of tobacco additives on tobacco smoke harmfulness remains unclear. |
doi_str_mv | 10.1590/0102-311X00132415 |
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subjects | Animals Carbon Monoxide - analysis Flavoring Agents - analysis Formaldehyde - analysis Humans Lead - analysis Nicotine - analysis Rats Smoke - analysis Tobacco Industry Tobacco Products - analysis Tobacco Products - toxicity |
title | The impact of tobacco additives on cigarette smoke toxicity: a critical appraisal of tobacco industry studies |
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