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Background:Cigarettes and other forms of tobacco contain the addictive drug nicotine. Other components, either naturally occurring in tobacco or additives that are intentionally added during the manufacturing process, may add to the addictiveness of tobacco products. As such, these components can make cigarette smokers more easily and heavily dependent.Efforts to regulate tobacco product dependence are emerging globally. Additives that increase tobacco dependence will be prohibited under the new European Tobacco Product Directive.Objective:This article provides guidelines and recommendations for developing a regulatory strategy for assessment of increase in tobacco dependence due to additives. Relevant scientific literature is summarized and criteria and experimental studies that can define increased dependence of tobacco products are described.Conclusions:Natural tobacco smoke is a very complex matrix of components, therefore analysis of the contribution of an additive or a combination of additives to the level of dependence on this product is challenging. We propose to combine different type of studies analyzing overall tobacco product dependence potential and the functioning of additives in relation to nicotine. By using a combination of techniques, changes associated with nicotine dependence such as behavioral, physiological, and neurochemical alterations can be examined to provide sufficient information.Research needs and knowledge gaps will be discussed and recommendations will be made to translate current knowledge into legislation. As such, this article aids in implementation of the Tobacco Product Directive, as well as help enable regulators and researchers worldwide to develop standards to reduce dependence on tobacco products.Implications:This article provides an overall view on how to assess tobacco product constituents for their potential contribution to use and dependence. It provides guidelines that help enable regulators worldwide to develop standards to reduce dependence on tobacco products and guide researches to set research priorities on this topic.
Background:Cigarettes and other forms of tobacco contain the addictive drug nicotine. Other components, either naturally occurring in tobacco or additives that are intentionally added during the manufacturing process, may add to the addictiveness of tobacco products. As such, these components can make cigarette smokers more easily and heavily dependent.Efforts to regulate tobacco product dependence are emerging globally. Additives that increase tobacco dependence will be prohibited under the new European Tobacco Product Directive.Objective:This article provides guidelines and recommendations for developing a regulatory strategy for assessment of increase in tobacco dependence due to additives. Relevant scientific literature is summarized and criteria and experimental studies that can define increased dependence of tobacco products are described.Conclusions:Natural tobacco smoke is a very complex matrix of components, therefore analysis of the contribution of an additive or a combination of additives to the level of dependence on this product is challenging. We propose to combine different type of studies analyzing overall tobacco product dependence potential and the functioning of additives in relation to nicotine. By using a combination of techniques, changes associated with nicotine dependence such as behavioral, physiological, and neurochemical alterations can be examined to provide sufficient information.Research needs and knowledge gaps will be discussed and recommendations will be made to translate current knowledge into legislation. As such, this article aids in implementation of the Tobacco Product Directive, as well as help enable regulators and researchers worldwide to develop standards to reduce dependence on tobacco products.Implications:This article provides an overall view on how to assess tobacco product constituents for their potential contribution to use and dependence. It provides guidelines that help enable regulators worldwide to develop standards to reduce dependence on tobacco products and guide researches to set research priorities on this topic.
The European Commission has established a priority list of 15 additives contained in cigarettes and roll-your-own tobacco subject to enhanced reporting obligations. The European Union (EU) Tobacco Products Directive (TPD) prescribes that Member States shall require manufacturers and importers of tobacco products to carry out comprehensive studies on these additives to assess their contribution to any of the properties listed in Article 6 of the TPD: toxicity or addictiveness, characterizing flavor, inhalation facilitation, nicotine uptake, and carcinogenic, mutagenic, or toxic for reproduction. The Scientific Committee on Health, Environmental, and Emerging Risks (SCHEER) has provided guidance on the type and criteria for comprehensive studies, and on the most suitable methodologies to test these 15 tobacco additives as well as additives on future updated lists. The SCHEER proposes a stepwise strategy as the most pragmatic and efficient way to assess the effects of tobacco additives. In addition to proposing specific steps and tests to be considered by industry, some general criteria were also identified such as no comparative testing (testing cigarettes with and without the additive) and no animal studies. As tobacco additives have no benefits for health, but rather may promote use of and addiction to an extremely toxic product, a risk–benefit analysis is not the appropriate paradigm for assessing the additive. When comprehensive studies confirm that additives have any of the properties listed in Article 6 of the TPD, regulatory actions should be considered. If uncertainties cannot be solved by comprehensive studies, the SCHEER recommends that the assessors consider the worst-case evaluation. Implications In this article, the SCHEER proposes a stepwise strategy to assess (1) the toxic and addictive effects, (2) the characterizing flavor, and (3) facilitating inhalation properties of tobacco additives. The proposed steps and tests provide guidance to (1) Member State on which comprehensive studies should be requested and (2) tobacco industry on which strategy of testing should be applied to address the request and to prepare reports to be sent to the relevant authorities for the evaluation of tobacco additives “safety” to comply with the Tobacco Products Directive 2014/40/EU.
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