Most important: The brain develops until 25 – endocannabinoids control pruning and myelination. Meier 2012 (n=1037, Dunedin cohort): Start before 15 = 8 IQ point loss by 38. Adults who started after 18: no significant loss. At a glance: Brain development up to 25 – endocannabinoids control pruning and myelination, THC disrupts these processes Meier […]