23-year-old Dan Parker is one of the lucky ones – though he nearly lost the use of his bladder he is now, thankfully, on the road to recovery.
"At the highest point I couldn’t hold more than four to six millilitres of water in my bladder," he told ITV News.
"I had letters off consultants and doctors saying that if I didn’t stop I’d be using a colostomy bag."
Dan is one of a growing number of young people suffering irreversible bladder failure after comparatively short periods of ketamine abuse.
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