Michael Mosley investigates the dramatic rise of electronic cigarettes. E-cigarettes are everywhere these days, but what does the latest scientific research on them reveal?
Are they really better for you than cigarettes? What is actually in them? Is passive vapour harmful? And can they really stop you from smoking?
Michael meets some of the scientists around the world studying them, asks a group of volunteers to try to give up smoking regular cigarettes using them, and even takes up ‘vaping’ himself, using an e-cigarette every day for a month to see the effects on his own health – no easy task for such a committed non-smoker.