How has non-medical cannabis legalization served the health and welfare of under-age (adolescent) youth in Canada?

“Among under-age youth in Alberta and Ontario, legalization was associated with a 20% increase-equivalent (2015-2019) for ED visits involving cannabis-related disorder/poisoning, and there were increases in cannabis-related (eg, for psychosis, poisoning, withdrawal, harmful use) hospitalizations,” Simon Fraser University et al quantified.