The latest federal survey data shows that while teen marijuana use continues to decline in the era of legal pot, adult use is rising. The percent of people over the age of 18 who smoke it in a given year has risen from 10.4 percent in 2002 to 14.1 percent in 2016. In other words, 46 million people got high last year.

In and of itself, the increase in adult marijuana use isn’t particularly alarming. Public-health researchers are typically more worried about adolescent drug use, which can derail a young person’s life. If more adults are smoking marijuana once or twice a year — even once or twice a month — it’s not really a huge concern.

More concerning, though, is the number of people who are getting high all the time — heavy users who smoke on a daily or near-daily basis. The federal data shows that those numbers are increasingly precipitously.

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