The teens are not all right. The Surgeon General issued an advisory Tuesday recommending local governments ban indoor vaping, as well as tax e-cigarettes, to protect our nation's youth, USA Today reports. The advisory singled out Juul in particular as a threat, and called on parents, teachers, and health professionals to do more to stop young adults from vaping.

"The recent surge in e-cigarette use among youth, which has been fueled by new types of e-cigarettes that have recently entered the market, is a cause for great concern," Surgeon General Jerome Adams said in the advisory, one of only four advisories from the Surgeon General's office issued since 2005. "We must take action now to protect the health of our nation's young people."

He's not kidding about that surge. A new report issued one day ago found that e-cig usage increased drastically among high school students in 2018 alone, with nearly two in five high school seniors reporting they vaped in the last year. In 2017, 11 percent of seniors reported vaping in the last 30 days; this year, it increased to 21 percent. (On the bright side, narcotic opioid use hit a record low, per the report. Marijuana use didn't change.)

The fear with e-cigs is that they cause nicotine addiction, which can warp young brains. Adams also pointed to research showing e-cigarette use can lead to tobacco cigarette use in teens.

A crackdown on e-cig sales to minors—and specifically on fun flavors that attract young customers—was recommended by the Food and Drug Administration last month, prompting Juul to temporarily stop selling creme, cucumber, fruit, and mango pods in stores. In a twist of irony, Juul also had to ban the use of e-cigs in its own offices this month to comply with state laws. Vape 'em if you got 'em.