The study products included: Product A: Classic Tobacco flavored e-cigarette (2.4 % nicotine, ~75 % glycerin) Product B: Classic Tobacco flavored e-cigarette (2.4 % nicotine, ~50 % glycerin/~20 % propylene glycol) Product C: Menthol flavored e-cigarette (2.4 % nicotine, ~75 % glycerin) Product D: Classic Tobacco flavored e-cigarette (1.6 % nicotine, ~75 % glycerin) Product E: Classic Tobacco flavored e-cigarette (1.6 % nicotine, ~50 % glycerin/~20 % propylene glycol) Product F: Tobacco Cigarette Study design This was a randomized, partially single-blinded, six-period crossover study conducted at a single independent research center (Celerion, Lincoln, NE)

Two other studies that examined similar non-nicotine e-cigarette comparisons ( n = 249 and n = 140) were of very low certainty.29 , 30 Overall, RCTs27 29 , 31 39 examining benefits for smoking cessation of e-cigarettes suggested that e-cigarettes with nicotine may provide a small to moderate cessation benefit at 6 months follow-up compared with non-nicotine e-cigarettes or no intervention, with behavioural support or NRT access provided in both groups.23 Non-nicotine e-cigarette use may result in a small cessation benefit (Appendix 1).23 There were minor differences in study inclusion criteria and the meta-analyses undertaken between our review and the Cochrane living systematic review on e-cigarettes, likely because our review was focused on primary care settings

I think it's probably a throwback to seeing somebody like Bowie or Roxy Music onstage where it was a kind of unearthly thing - especially when you're about 14 or 15 and you're going to see a group, that's how it should be - something really special
Toddlers are intensely curious if you leave your bag on the floor, theyll be in there like a shot