The devices are easy to hide, and they often fly under the radar
(Often molasses.) Twist tobacco may be an exception in this case, as many brands of twist are not sweetened
Nigel Gray, Jack Henningfield, John Seffrin and Witold Zatonski, Tobacco: Science, Policy and Public Health , Oxford University Press, second edition, 2010, 776 pages (ISBN 9780199566655)
Furthermore, a panel of experts convened by the National Institutes of Health (NIH) in 2006 stated that the range of risks, including nicotine addiction, from smokeless tobacco products may vary extensively because of differing levels of nicotine, carcinogens, and other toxins in different products (6)
Cigarette smoke worsens lung inflammation and impairs resolution of influenza infection in mice