adolescence is a critical time for brain maturation, specifically for brain regions that are most susceptible to the effects of cannabis. A 2016 study from the same research team found that cannabis users aged 16 and under had difficulty learning new information, a problem that was not observed in users age 17 and older. A new study finds that one month of abstaining from cannabis use resulted in measurable improvement in memory functions important for learning among adolescents and young adults who were regular cannabis users.
— source massgeneral.org Oct 30, 2018