Identifying the New and Distinctive Exposure Risks of Little Cigars Challenge Little cigars have been rapidly growing in popularity, especially among younger smokers. However, their chemical composition has not been as well characterized as the composition of traditional cigarettes. Mainstream smoke from little cigars contains a mixture of compounds that can differ substantially, both quantitatively and qualitatively, from smoke produced by cigarettes. This means that users may be exposed to compounds that are new (unique to little cigars compared to traditional cigarettes) or distinctive (occurring in higher abundance compared to traditional cigarettes). Tobacco regulators and the public health community need a better understanding of the chemical composition of these and other emerging

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