Teen marijuana use has hit its lowest point in over three decades, a new study reveals, defying concerns that legalization might spur a rise in use among young people. The University of Michigan’s ...

Using a national survey of 88,183 adolescents in grades nine to 12, findings show marijuana use declined from 23.1% in 2011 to 15.8% in 2021, with first-time use before age 13 dropping from 8.1% to ...