Electronic cigarettes should be banned indoors, the World Health Organisation said today.
In a long-awaited report, the United Nations health agency also said that the devices should be regulated to "minimise content and emissions of toxicants".
It called for a ban on e-cigarettes that contain fruit, candy-like and alcohol-drinks flavours, as well as advertising and sales of the products to minors.
In addition, it advised that vending machines selling electronic cigarettes should be removed in almost all locations.
The organisation expressed concern at multinational tobacco companies monopolising the multi-billion pound market.
It urged a range of "regulatory options", including prohibiting e-cigarette makers from making health claims - such as that they help people quit smoking - until they provide "convincing supporting scientific evidence and obtain regulatory approval".
The report will be debated by member states at a meeting in October.
More top news
The social network has partnered with France's Eutelsat to build AMOS-6, due for launch in 2016.
High levels of immigration to the UK are unsustainable and threatening the cohesion of society, Home Secretary Theresa May is to warn.
A homeless woman lay dead at a McDonald's for hours as oblivious diners ate around her.