Hello, I'm Manuela Saragossa, and this is Business Daily from the BBC.

Coming up, 21st century addictions.

Hi, I'm 14 years old, and I use the jewel.

Sometimes during class, like I'll leave, like if I get really stressed, like, it's kind of like my go-to.

Like, I kind of need it.

It's just a part of my life now that,

like, I know it's bad, but I can't stop. Forget Marlborough Man, vaping is the new smoking.

And in America, a single brand dominates the e-cigret market, accounting for nearly three

quarters of all sales in a multi-billion dollar industry. That brand is jewel, spelled J-U-U-U-L.

Some have described it as the iPhone of e-cigarettes. It's so big it's even entered the lexicon.

In the US, you don't say you're vaping, you say you're dueling. The problem is American teenagers are

among those who've taken to dueling in a big way,

and that's not good news for a company which has a very ambitious aim.

We're very clear. Our global mission is to eliminate cigarette smoking.

The vaping dilemma coming up here in Business Daily from the BBC.

I'm in Soho in central London and I'm just popping into Evapo, which is a vaping store,

a store that sells all kinds of vaping equipment and flavours.

There are loads of these types of vaping stores all over London now.

Now, I'm an ex-vaper, also an ex-smoker.

And this is the sort of shop I would regularly pop into,

but that was quite a few years ago.

The vaping industries changed a lot in those years,

...