Wales is planning to ban the use of e-cigarettes in enclosed public spaces and workplaces, dividing opinion among health groups.

Public Health Wales and the BMA are in favor of the curbs on the use of e-cigarettes, which are expected to come into force in 2017.

However, a host of respected organisations oppose the move. These include anti-smoking campaign group ASH Wales and Cancer Research UK, while the British Heart Foundation, British Lung Foundation and Royal College of Physicians want to see more evidence.

Some opponents are concerned that the ban might discourage smokers from using e-cigarettes to stop smoking. George Butterworth, tobacco policy manager for Cancer Research UK, told the BBC: “E-cigarettes are an opportunity for people to move away from tobacco smoking which is very, very bad for their health, and we wouldn’t want to put up any barriers to prevent people from quitting cigarettes.”

However, ministers believe e-cigarettes are a “gateway” for young people to start smoking by normalising cigarettes. Health minister Mark Drakeford said the new Public Health Bill has found the correct balance of helping smokers quit and preventing young people from smoking in the first place.

The plan, which is the first in the UK, is also seen as an illustration of the benefits of devolution. Welsh officials have made the move independently of their counterparts in England, Scotland and Northern Ireland.

Similar restrictions on e-cigarette use already exist in countries such as Belgium, Spain and Malta, with proposals on the table in France and Ireland.

Tattoo and piercing parlours will need licences under another measure introduced in the Public Health Bill.

E-cigarettes: safer than tobacco, say researchers:

Electronic cigarettes are “less harmful” than traditional cigarettes, an analysis of recent studies released last summer concluded.

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 cigarettes in 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.

E-cigarettes become the ‘ alcopops of the nicotine world ‘

Teenagers in the UK are increasingly experimenting with electronic cigarettes, a large-scale health study has found.

“E-cigarettes have rapidly become part of at-risk teenagers’ substance-using repertoires,” said Professor Karen Hughes, who is one of the study’s authors. Her team believes that the electronic devices have become the “alcopops of the nicotine world” and urgently require tougher regulation.

Researchers who surveyed more than 16,000 students aged 14 to 17 in the north west of England found that boys were more likely to experiment with e-cigarettes than girls.

The study also found that teenagers who drank alcohol were “significantly” more likely to experiment with e-cigarettes than non-drinkers, the Press Association reports.

The issue of e-cigarettes continues to divide healthcare experts. Some insist they are a safer option to smoking and have helped many people give up, others say they are a public health menace with no real track record in terms of effectiveness. The World Health Organization argues that they could lead to the “renormalisation” of smoking and warns that their long term health effects are still unknown.

A ban on selling e-cigarettes to teenagers under the age of 18 has been announced in England. Similar measures may soon be introduced nationwide as a result of health concerns associated with their use, as well as fears that they could serve as a gateway to traditional cigarettes.

E-cigarettes contain “a highly addictive drug that may have more serious and longer lasting impacts on children because their brains are still developing,” warned Professor Mark Bellis, who also worked on the study.

Dr John Middleton of the Faculty of Public Health told the BBC that nationwide regulation of e-cigarettes is urgently needed.

“Our concern is that if we wait for proof that electronic cigarettes could act as a gateway to smoking cigarettes, it will already have happened and the tobacco industry will have been given the opportunity to recruit its next generation of smokers,” he said.