Yes, on its own nicotine is about as harmful as caffeine - i.e. not very harmful but has a few small risks. We have quite a bit of data on the effects of nicotine because of its use in NRT (ecigs contain the same pharma-grade nicotine as NRT). The Royal College of Physicians reviewed the data and concluded:
- Extensive experience with nicotine replacement therapy in clinical trial and observational study settings demonstrates that medicinal nicotine is a very safe drug.
- Adverse effects are primarily local and specific to the mode of delivery used.
- NRT does not appear to provoke acute cardiovascular events, even in people with pre-existing cardiovascular disease.
- There is no direct evidence that NRT therapy is carcinogenic or influences the risk of other common smoking-related diseases in humans.
- Evidence on the safety of NRT during pregnancy is limited, but suggests that NRT does not increase the risk of major developmental anomalies or reduce birth weight. However, NRT may increase the risk of minor musculoskeletal anomalies. Further evidence on these effects is needed.
- Evidence on the safety of long-term use of NRT is lacking, but there are no grounds to suspect appreciable long-term adverse effects on health.
- In any circumstance, the use of NRT is many orders of magnitude safer than smoking
NICE guidance recommends the use of NRT for children as young as 12 and for pregnant women who cannot quit without it and also recommends long term use of NRT when necessary as a harm reduction strategy.
However I am also wanting to have a closer look at the social impact it has in terms of being 'cool' to vape and investigating about people who've never smoked before starting to vape
I spend about half my time being told I look 'too cool' and the other half being told I look like a twat
There is simply no evidence that non-smokers are taking up vaping and lots of people have been looking really hard.
ASH: Less than 1 per cent of never smokers have ever tried electronic cigarettes and virtually none continue to use them.
Smoking in England: Use of e-cigarettes by never smokers is rare in the UK and US
Public Health England: Electronic cigarettes are primarily used by current and former smokers, and only about 0.5% of never smokers in Great Britain have tried the product.
(see also the links I posted here).
the adverts don't seem to focus as much on the quitting aspect
That's because they're not allowed to. Current rules on advertising are here:
Marketing communications / advertisements must not contain health or medicinal claims unless the product is authorised for those purposes by the MHRA.
Unless a product gets a medicinal licence, advertisers are not allowed to say they can help you quit or that they are safer than smoking, even though both are true.
I don't like a lot of the advertising I've seen for the big name products (Blu, VIP etc.), it tends to be horribly over sexualised for some reason. 's OK though IMO. The original version was pulled. At the beginning, the man said 'I used to smoke normal cigarettes, but after I quit, I tried these.' The ASA ruled that this could encourage non-smokers to try ecigs so it was edited to 'I used to smoke normal cigarettes, I tried these' which is utterly meaningless but probably the best they could do, given they're also not allowed to suggest he used them to quit smoking.
If you want some really good background reading I can recommend Clive Bates' Briefing on the science and policy of e-cigarettes and vaping It's long because it covers everything but it's an easy read.