Neal Benowitz, M.D., chief of the division of clinical pharmacology at the University of California, San Francisco, has concerns about whats actually in the e-liquidsolvents like propylene glycol and glycerin, and certain flavoring agents that are safe to eat but may be problematic when heated and inhaledand what metals are coming off a devices heating coils (researchers at Johns Hopkins, for example, recently found significant levels of lead and arse-nic in the aerosol of a variety of refillable tank-style vapes)
Lightfoot's gentle, sentimental delivery was noted by Carpenter as evoking nostalgia, but that this was not necessarily a "compelling or accurate portrait of Canada", with the article concluding: "Simply casting Lightfoot as an exemplar of Canadian-ness overshadows Lightfoot's legacy
Another study found that the use of menthol IQOS for 5 days by smokers reduced biomarkers of oxidative stress, platelet activation, white blood cell count, and endothelial function, and better lipid metabolism and lung function 100
In Australia, with the exception of Western Australia, it is illegal to use, sell or buy nicotine for use in e-cigarettes without a prescription (Lung Foundation (a), n.d.)