just read this on wikipedia:
Health issues
Some companies have marketed electronic cigarettes as a healthier alternative to tobacco smoking, and make claims that most of the harmful material produced by the combustion of tobacco in traditional cigarettes is not present in the atomized liquid of electronic cigarettes. Other suppliers have marketed electronic cigarettes as a way to curtail an addiction to nicotine.[4]
In May 2009, the US FDA's Division of Pharmaceutical Analysis tested the contents of cartridges by two vendors. Diethylene glycol and tobacco-specific nitrosamines (TSNAs) were detected in some of the cartridges tested. Further concerns were raised over inconsistent amounts of nicotine delivered when drawing on the device.[5] In July 2009, the FDA issued a press release discouraging the use of electronic cigarettes and repeating previously stated concerns that electronic cigarettes are marketed to young people and lack appropriate health warnings.[6]
Critics argue that the FDA's warning will mislead the public by de-emphasizing the low quantities at which the toxicants and carcinogens were detected. The FDA's study was reviewed in July 2009 by scientific consulting firm Exponent, Inc., in a report commissioned by the manufacturer of one of the electronic cigarettes tested by the FDA. Among other things, Exponent's report criticized the FDA study for poor standards of documentation and analysis, as well as a failure to perform relevant comparisons to FDA-approved nicotine replacement therapy products, concluding that the FDA's claims of potential adverse health effects were not supported by the study.[7]
The presence of trace amounts of TSNA in electronic cigarette vapor was previously documented in an analysis done by Health New Zealand in October 2008. The study concluded that carcinogens and toxicants are present only below harmful levels and overall the product tested was deemed a "safe alternative to smoking."[8]
In September 2008, the World Health Organization issued a release proclaiming that it does not consider the electronic cigarette to be a legitimate smoking cessation aid, stating that to its knowledge, "no rigorous, peer-reviewed studies have been conducted showing that the electronic cigarette is a safe and effective nicotine replacement therapy."[9] Studies have shown that when smokers use vaporized nicotine for either supplemental or smoking cessation reasons, the vaporized nicotine produces similarly addictive and psychological effects as cigarettes. [10] However, a report published by the US National Institutes of Health found that participants of the studies who used the inhaler alone did not meet ICD-10 or DSM-IV criteria for dependence on the substance (dependence symptoms in subjects who used the inhaler concurrently with real cigarettes are believed to be caused by dependence from the real cigarettes). [11]
On March 27, 2009, Health Canada issued an advisory against electronic cigarettes. The advisory stated "Although these electronic smoking products may be marketed as a safer alternative to conventional tobacco products and, in some cases, as an aid to quitting smoking, electronic smoking products may pose risks such as nicotine poisoning and addiction."[12]
So as far as I'm concerned, the FDA just need to regulate the ingredients of the liquid solutions for those whom do not look into what they are getting. I would imagine everyone here in these forums buys their liquids from reputable sellers and knows what they are vaping.
