Terry Green
Terry Green voted up Joy Twain's answer

The US study that found formaldehyde had to raise the ohms to 5X the power used in pens.  No formaldehyde was found at the heat used in e cigarettes.

In the UK, where there isn't a major tobacco industry, they're recommended.  Here's an article you might like.

http://www.theweek.co.uk/58735/e-cigarettes-should-be-prescribed-on-the-nhs-says-health-body

"Their findings are unequivocal," says the … Read more