how many people in us smoke cigarettes Chart: Smoking Isn't Fire Chart: Where Smoking Is Still

The exact amount of nicotine varies by brand

In one study, 22% of abrupt smokers remained abstinent after six months and only 15.5% of smokers who gradually cut back over two weeks remained abstinent after six months

This brand was founded in Istanbul, Turkey by Greek tobacco businessman Basil Muratgolu

"Somebody said when they first saw the warning, these are really gross, and they are," Sebelius said

However, some studies argue that e-cigarettes may cause only mild, short-term respiratory irritation and do not provide strong evidence that vaping leads to serious lung diseases

They also work in a similar way, which is to inject the tobacco into the tube