Young people who use e-cigarettes are more likely to take up tobacco cigarettes, according to an international review of research into vaping.

People under 20 who used vapes were more than three times as likely to have ever smoked tobacco cigarettes, and more than twice as likely to have smoked cigarettes in the previous month, according to a review of 25 studies globally.

The review, published in the journal Plos One, was led by Australian researchers and funded by the World Health Organization. It analysed vaping studies in several countries, including the US, UK and Germany.