The law makes it more difficult for smokers to find healthier alternatives. So says Niklas Linder, chairman of the Swedish trade organisation for electronic cigarettes (BELC).
Smokers who use both cigarettes and e-cigs are at greater risk of stroke, say researchers. But the study has been massively criticised as "downright misleading".
An interest in technology led Karl Åke Johansson to quit smoking. The key was e-cigarettes and the drive to understand the technology behind vejpningen.