Heavy-Using Minority of Weed Users Consume Majority of Cannabis in Canada

Article by Cheryl Chan, Vancouver Sun

Heavy-using minority of pot users consume majority of cannabis in Canada Men age 15 to 34 are disproportionately represented among the heaviest users subgroups, which also mirrors the pattern in alcohol use. CHERYL CHAN Dr. Russ Callaghan of the Northern Medical Program is the lead author of a report looking into consumption patterns of cannabis use in Canada. PNG

Only 10 per cent of cannabis users consumed the majority of cannabis in Canada in 2018, according to a new study from the University of Northern British Columbia.

Dr. Russ Callaghan and his team crunched data from the 2018 National Cannabis Survey and found that that small subset of heavy users were responsible for about two-thirds of all cannabis consumed across the country last year.

“This is a pattern that is similar to the one we see in alcohol, but a bit more concentrated,” said Callaghan, the study’s lead author and professor in the university’s medical program.

“This is the first study to identify this pattern, and it may be important for public-health strategies in designing interventions to reduce cannabis-related harms.”

The study wanted to examine whether cannabis consumption is similar to the consumption pattern for alcohol, where a small minority of drinkers account for a disproportionately high percentage of total alcohol consumption.

The findings came as a surprise to Callaghan. “We weren’t sure what we’d find because I know cannabis use is so prevalent in our society. But after the findings came out, it made sense that it is similar to the patterns found in alcohol.”

The study used data from a population-based survey in the first three quarters of 2018, prior to legalization.

Callaghan said there hasn’t been enough research in the cannabis field to indicate in which subset of users cannabis-related harms are concentrated. For alcohol, research has shown the harms are primarily found in the low- and moderate-using groups.

That is because there are many more low and moderate users rather than heavy users, said Callaghan, who hypothesized that the harms in cannabis would likely also follow a similar pattern to alcohol.

Read the full article here.

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