Comparing the cancer potencies of emissions from vaporized....

30 August 2017

Comparing the cancer potencies of emissions from vaporized nicotine products including e-cigarettes with those of tobacco smoke
“Cancer potencies of various nicotine-delivering aerosols were modeled using published chemical analyses of emissions and their associated inhalation unit risks. Lifetime cancer risks were calculated from potencies using daily consumption estimates.

Most e-cigarettes had potencies <1% of tobacco smoke and falling within two orders of magnitude of a medicinal nicotine inhaler; however, a small minority had much higher potencies. These high-risk results tend to be associated with high levels of carbonyls generated when excessive power is delivered to the atomizer coil. Samples of a prototype heat-not-burn device have lower cancer potencies than tobacco smoke by at least one order of magnitude, but higher potencies than most e-cigarettes. Mean lifetime risks decline in the sequence: combustible cigarettes >> heat-not-burn >> e-cigarettes (normal power) ≥nicotine inhaler.”
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