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One study found that youth who vaped a higher concentration of nicotine were more likely to subsequently smoke at higher frequency and intensity levels, which further supports the catalyst hypothesis and suggests specificity of the association to nicotine and nicotine-containing products

Peer review Peer review information Communications Medicine thanks Samuel Asare, Alicea Lieberman and the other, anonymous, reviewer(s) for their contribution to the peer review of this work

And for still having some of the two RTW blends left, which I do not absolutely love, I've ordered three more tins of this to mix with those two RTW blends

The nicotine content in e-liquids can vary widely, ranging from 0 mg/ml (nicotine-free) to over 24 mg/ml