Toronto, ON -- (SBWIRE) -- 08/06/2014 -- Electronic cigarettes are "less harmful" than traditional cigarettes, new analysis of recent studies has shown.

An international group of scientists analysed data from over 80 studies conducted on the use and sale of e-cigarettes. According to the BBC, it focused on safety concerns, the toxicity of the chemicals present in both the liquid and the vapour and analysed the rate of use among non-smokers as well as smokers.

The analysis also showed that e-cigarettes are not regularly being used by non-smokers or those under the age of 18. It said that there was no evidence that the products encouraged young people to start smoking.

Most significantly, scientists showed that e-cigarettes can help smokers cut down their cigarette intake and even help them quit entirely. And they warned that tough regulation of the new industry could "damage public health on a big scale".

"Regulators need to be mindful of crippling the e-cigarette market and by doing so failing to give smokers access to these safer products that could save their lives", said Professor Peter Hajek, one of the authors of the paper.

However, Prof Martin McKee, of the London School of Hygiene and Tropical Medicine pointed out that despite the research, health professionals remain "deeply divided" on the issue.

So what do we know about e-cigarettes, and should they be regulated?

What are e-cigarettes?
E-cigarettes come in a range of shapes and sizes, but common to all of them is the way they work. A built-in battery powers a small electronic heating element located in the "atomiser", which draws liquid up from a cartridge and onto the element. The solution, usually a mixture of propylene, glycol, glycerine, flavourings, and – critically – nicotine, turns to vapour and is inhaled through the mouthpiece.

Some e-cigarettes look like a regular tobacco cigarette, others look more like the top of a hookah pipe. Others still have been made to look like a traditional pipe – the kind that Sherlock Holmes smoked.

Are they dangerous?
Anna Gilmore, director of the Tobacco Control Research Group at the University of Bath told The Guardian: "E-cigarettes are certain to be way less harmful than cigarettes. Common sense would dictate that". But their long-term effects still remain unknown.

The WHO says that their safety is "illusive", noting that it is impossible to know what effect they may have on the body because "the chemicals used in electronic cigarettes have not been fully disclosed, and there are no adequate data on their emissions".

The British Medical Association (BMA) has also expressed concerns about the lack of adequate testing or controls. "The real truth," says Gilmore, "is that we just do not know.We cannot say e-cigarettes are risk-free. We cannot yet be sure what impact they will have on smoking rates or population health, whether they'll be the miracle product or not."

Should they be regulated?
Professor Robert West, of University College London told the BBC that e-cigarettes should be "regulated appropriate to what they are" and that they are "orders of magnitude safer" than tobacco cigarettes

He suggested "bespoke regulation" including banning sales for under-18s and controls on how the devices are advertised.

Dr Vivienne Nathanson, the British Medical Association's director of professional activities, told the BBC that there was evidence that children were beginning to use e-cigarettes as a direct result of marketing campaigns.

"Rather like cigarettesin the 50s and 60s, we really need to look at [advertising] and, I believe, ban it, to stop them advertising in a way that attracts children," she said.

Professor John Ashton, president of the UK's Faculty of Public Health, agreed that the possibility that advertising might impact on children was a cause for concern.

E-cigarettes are currently not regulated as medicines in the UK, the Daily Telegraph notes, but Britain's drug watchdog the MHRA wants to introduce new controls by 2016.

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