The UK's NHS says second-hand smoke "is a lethal cocktail of more than 4,000 irritants, toxins and cancer-causing substances"
Residential building codes had provisions only for smoke detectors connected to mains power
People experience frequent attacks over a period of weeks or months, and then they typically experience a remission period
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It means that advertising of so-called e-cigarettes will be banned, as will their sale to under-18s and their use in public places, a measure that has been in place for tobacco since 2007."I have decided that the measures which apply to tobacco will also be extended to electronic cigarettes," Touraine told a press conference coinciding with World No Tobacco Day."We have to set limits on this practice but nothing justifies an overall ban," she said, adding the e-cigarette could in some cases help addicted smokers wean themselves off their habit.Invented in China in 2004, the e-cigarette has a diode that heats up a liquid, usually containing propylene glycol, nicotine and flavourings, delivering it as a gas to the lungs with each draw.The user exhales vapour, but not smoke, a practice called "vaping."The argument in favour of the devices is that they do not have the tar, ash and toxins found in conventional cigarettes.For health experts, though the jury is still out.The UN's World Health Organisation (WHO) has said that the safety of e-cigarettes "has not been scientifically demonstrated
