Ambulance study shows major change in cannabis risk

The way people use cannabis appears to be becoming increasingly dangerous, according to an analysis of ambulance records.

The study is based on 10,531 cannabis-related ambulance attendances involving 15 to 59 year olds in metropolitan Melbourne from 2000 to 2013

It shows a sharp increase in attendances per 100,000 population per year, from 0.6 (2000–2010) to 5.5 (2010