NEW YORK CITY, NY (NBC News) -- A growing number of baby boomers are acting like teenagers again -- using marijuana.
Synthetic Marijuana (Spice), Photo Date: 10/22/15 / Photo: DoD / (MGN)
The difference now is that older Americans appear to be smoking joints to ease their aching joints (no pun intended) or other ailments.
A study from New York University shows 9 percent of people in their 50s and early 60s use cannabis. That's up from less than 5 percent more than a decade ago.
Those who smoked as teenagers were more likely to take it up again as older adults.