In terms of vapor production they are not so good as pen
E-cigarettes, Vapes And Other Digital Nicotine Supply Techniques Ends Authorized By The Fda One, printed this year in the journal PNAS, found that e-cigarette aerosol causes DNA damage in mice. Another, published in Scientific Reports in May, found that e-cigarettes comprise more of the potential carcinogen formaldehyde than beforehand estimated. Public Health Consequences of E-Cigarettes … Read more