Use of hazard indices for a theoretical evaluation of cigarette smoke composition
Abstract
The chemical composition of cigarette mainstream smoke (MS) has been quantitatively analyzed in multiple studies, often with the objective to toxicologically evaluate and compare various types of MS. Increases and decreases in yields of constituents between MS types can only be consolidated if these yields are compared on the basis of toxicological properties of the individual constituents. For the risk assessment of various complex mixtures including MS, a hazard index (HI) approach has been used that requires weighing of the exposure to individual MS constituents by cancer and noncancer potency values. The objective of the current study is to review the past uses of the HI concept for MS and smokeless tobacco and discuss strengths and limitations of using this concept. Published information as well as information made available on the Web was used. The HI concept has been applied to MS for determining and comparing theoretical lifetime risks, for consumer communication, for the prioritization of constituents for reduction, for ingredient assessment, and for the selection of constituents for regulation. The limitations of this approach are associated with the limited number of MS constituents with available yield data, the gap...Continue Reading
References
Contribution of cadmium in cigarettes to lung cancer: an evaluation of risk assessment methodologies
Cancer risk assessment for 1,3-butadiene: dose-response modeling from an epidemiological perspective
Citations
The impact of commonly used air filters in eliminating the exposure to secondhand smoke constituents
Electronic cigarette exposure disrupts blood-brain barrier integrity and promotes neuroinflammation.
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