Pick apart this article to justify or not.
http://tobaccoanalysis.blogspot.com/2012/10/new-study-provides-more-evidence-that.html
There are three reasons that I would not say electronic cigarettes pose no risks. First, they contain nicotine, which has adverse cardiovascular effects. So we are not expecting that electronic cigarettes will ever be viewed as being absolutely safe. Second, there are some acute respiratory irritant effects of propylene glycol inhalation. The implications of these effects for chronic use are not yet understood, but more research needs to be done before we know whether there might be some long-term respiratory effects. Third, there are low levels of a few specific volatile organic compounds. Of most concern is formaldehyde.
What is Formaldehyde?
Formaldehyde Facts, Uses, Health Related Issues
http://tobaccoanalysis.blogspot.com/2012/10/new-study-provides-more-evidence-that.html
There are three reasons that I would not say electronic cigarettes pose no risks. First, they contain nicotine, which has adverse cardiovascular effects. So we are not expecting that electronic cigarettes will ever be viewed as being absolutely safe. Second, there are some acute respiratory irritant effects of propylene glycol inhalation. The implications of these effects for chronic use are not yet understood, but more research needs to be done before we know whether there might be some long-term respiratory effects. Third, there are low levels of a few specific volatile organic compounds. Of most concern is formaldehyde.
What is Formaldehyde?
Formaldehyde Facts, Uses, Health Related Issues