Patients referred to the Alder Hey clinic had been using ketamine for an average of one to two years before referral, with half reporting using other drugs, 48% vaping, and 27% drinking alcohol.

From the articleChildren as young as 13 losing bladder control after getting hooked on ketamineAlso in Children as young as 13 being referred to UK hospital suffering from ‘ketamine bladder’, Teens as young as 13 referred for ketamine-linked bladder problems at UK clinic, 'Peeing a jellyfish': Children's ketamine injuries revealed, Children as young as 13 suffering bladder damage caused by ketamine