A UNITED Nations report has highlighted the extent of drug abuse in New Zealand, including " growing concern" over the misuse of prescription drugs.

The 22-page document, entitled "World situation with regard to Drug Abuse" states: " The highest prevalence of opioid use was estimated to be in North America and Australia and New Zealand, which in fact reflected the misuse of prescription painkillers."

The UN's report stated prescription drug misusers were often "young adults, women, elderly patients and healthcare professionals".

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