Why do some smoking cessation products work better than others for long-term quitting success?

That is a great question.

And it's also not the same in everyone.

Right.

So one of the things that scientists are trying to look at and get a better sense of is that for some people, some medications seem to work better than others.

And that probably has a pretty substantial genetic underpinning.

Absolutely.

How do you feel about e-cigarettes as a smoking cessation tool?