"In Massachusetts, where voters approved adult-use legalization in November 2016, past 30-day cannabis use among high schoolers fell from 24.5% in 2015 to 12.0% in 2025." www.masslive.com/cannabis/202...
masslive.com
https://www.masslive.com/cannabis/2026/09/now-that-marijuana-is-legal-in-mass-teens-arent-using-it-as-much-cdc-says.html