Children as young as 13 are suffering from ketamine-induced uropathy, a severe bladder condition caused by non-prescribed ketamine use that damages the bladder, urinary tubes, and kidneys.

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