TWomen who smoke fruit-flavored electronic cigarettes are more likely to become addicted, a study indicates.
California researchers found that 15- to 17-year-olds who tasted flavors like vanilla, watermelon or grapes were 22% more likely to be vaping six months later than those who used the traditional flavor of tobacco or menthol.
They also had a greater chance of vaping more often and taking more puffs each time they took an electronic cigarette.
Published in the journal Pediatrics, the study comes weeks after Donald Trump promised to ban flavored electronic cigarettes due to fears about risk to children.
Dame Sally Davies, who left her post as England's medical director this month, also called for a ban.
The following are several suspicious deaths and diseases related to electronic cigarette use, and a number of studies suggesting vaping can be dangerous.
Public Health England recommends that smokers try vaping as a way to quit and says the practice is at most only five percent as dangerous as smoking cigarettes.
However, critics said authorities have no way of knowing this and that all the dangers of vaping will become apparent in the long run.
For the new research, scientists at the University of Southern California followed 478 teens in Los Angeles every six months for two years.
Nine out of 10 vaped fruits, candies and other non-traditional flavors.
Sixty-four were still vaping six months after the first survey, compared with 42.9 of those who smoked traditional flavors.
Professor Adam Leventhal said: "Teenagers who use e-cigarettes may be more inclined to continue vaping than just experimenting with e-cigs temporarily.
“Whether or not children are still vaping is important.
"The longer you use steam more often, the more you expose yourself to e-cigarette aerosol toxins and put yourself at risk for nicotine addiction."