Study: Teens who vape are 4 times more likely to smoke cigarettes

(CNN) - A new study has found that teens who start using e-cigarettes are four times more likely to start smoking conventional cigarettes a year later.

That was true even if they never intended to start smoking.

The study was published Monday in the medical journal Pediatrics.

Researchers say the findings suggest e-cigarette use facilitates cigarette smoking primarily among tobacco-naive adolescents with no previous smoking intentions.

The study also says doctors can use the data to intervene before their young patients start vaping.