Do e-cigarettes cause cancer just like tobacco cigarettes?
Though testing by the FDA and some researchers have discovered trace amounts of tobacco-specific nitrosamines, which are known to cause cancer with high exposure, the amounts found were extremely low and unlikely to cause cancer. To put it in perspective, an e-cigarette contains nearly the exact same trace levels of nitrosamines as the FDA-approved nicotine patch and about 1,300 times less nitrosamines than a Marlboro cigarette.
This means that e-cigarettes would not be any more likely to cause cancer than FDA-approved nicotine gums, patches or lozenges.
Thanks to http://casaa.org/ for this valuable research.