““It’s really a product that’s good for some people and bad for other people, which doesn’t feel like too complex of a statement, but actually feels like something that is difficult for many to grapple with,” said Hartmann-Boyce, who is an associate professor of evidence-based policy and practice at the University of Oxford.
She led a 2022 Cochrane review — considered the best type of analysis of the available evidence — which looked at studies of e-cigarettes for smoking cessation. It found the strongest evidence yet that vaping works better than traditional nicotine replacement tools such as patches or gum to help people stop smoking. For those advocating that vaping is an effective harm-reduction mechanism, it was a significant win.
But it’s also more complicated than that.
Hartmann-Boyce said that since Cochrane first started looking at the evidence nearly 10 years ago, things have changed dramatically. The devices themselves are different now and are much better at delivering nicotine. That’s good for people trying to give up smoking but creates a problem with non-smokers like kids who are trying these for the first time.
But not everyone is even convinced it’s good for most smokers in the long term.
Jørgen Vestbo, a clinician and emeritus professor of respiratory medicine at the University Hospital of South Manchester, who recently returned to his native Denmark, agrees that the randomized controlled trials show e-cigarettes can help people quit.
But he also points to data from clinical trials that show people given e-cigarettes were more likely to use them for longer than those using aids such as nicotine gum. Vestbo said population-level evidence shows that as long as you are addicted to nicotine you are more likely to start smoking again.”
https://www.politico.eu/article/science-e-cigarette-tobacco-smoking-vaping-health-who-governments/