When weed started going all legal in various states around the U.S., some people got worried that meant lots and lots more teenagers and young people would start puffing on the herb.

According to a new study published in JAMA Pediatrics, however, ain’t no such thing happening. Among teenagers in Colorado, there is no significant increase or decrease in usage. There is, however, one crucial difference and unless you skipped the headline up top you probably already know what it is.

Since the last survey two years ago, teenagers have been eating and vaporizing weed more and they’ve been smoking old traditional flowers less. The most popular method of getting high is still smoking, but the ratio has changed.

Back in 2017, 4% of teens who use cannabis said they preferred to dab. Two years later, that number is up to 7.5%. The increase is even steeper when it comes to edibles. In 2017, only 2% of teens said they liked to eat their weed, and now it’s up to 10%.

Meanwhile, as logic would dictate, the same teens are smoking weed less. Way back in the old timey days of 2017, 87% of teens preferred to smoke, but now in modern times only 78% feel the same way.

A report about the study from the Associated Press reveals a few other interesting tidbits about teen use in Colorado. The rate of cannabis usage in the area is about 1 in 5 teens, right around the same as the rest of the country. Only 3% said they bought their weed from legal dispensaries, meaning there is a thriving black market going on in the state.

Researchers say they’re trying to refine their research methods to find out even more about cannabis behavior.

“We are in certain ways leading the country in trying to figure out what are the right questions to ask and how do you ask those questions,” said Jessica Neuwirth, Colorado Department of Public Health’s retail marijuana education and youth prevention coordinator.