Researchers say that teenagers who use e-cigarettes are more likely to use other substances.

According to a new study published in JAMA, young people who vape are 3.5 times more likely to smoke marijuana.

UPI reports that researchers analyzed studies that looked at e-cigarette use people between ages 10 and 24. They found that kids aged 12 -17 who vaped had four times the risk of going on to smoke pot than those aged 18 - 24.

The study's findings are significant as one-fifth of high schoolers have reportedly vaped and one-third have vaped marijuana.

E-cigarette use has been linked to a variety of health risks, including cardiovascular risk and lung damage.