Pot’s Potential Benefit for Mental Health Among Understudied Areas that Could be New Research Priorities

Article by Lucie Edwardson, CBC News

Calgary Pot's potential benefit for mental health among understudied areas that could be new research priorities Social Sharing Facebook Twitter Email Reddit LinkedIn University of Calgary researchers looked at more than 1,000 studies about cannabis and mental health Lucie Edwardson · CBC News Only two of more than 1,000 studies about cannabis and mental health looked at possible benefits. (John Robertson/CBC) Fiona Clement of the University of Calgary says more could be done to measure the impact of factors like users' ages, lfrequency of use and method of ingestion. (Riley Brandt/University of Calgary) From left, University of Calgary researchers Ruth Leonora Diaz, Dr. Rebecca Haines-Saah, Brenlea Farkas, Dr. Matthew Hill, Dr. Fiona Clement, and Dr. Scott Patten, who worked on the report titled Cannabis and Mental Health Priorities for Research in Canada. (Jade Markus/University of Calgary)

Calgary researchers who examined more than 1,000 studies of cannabis and mental health say only two looked at possible benefits instead of harm — and overall there are some big gaps in knowledge that could become national research priorities.

The new report, Cannabis and Mental Health: Priorities for research in Canada, was created by researchers at the University of Calgary to close the gap on cannabis and mental health research.

Following legalization in October 2018, the Mental Health Commission of Canada was asked by Health Canada and the federal government to lead the research agenda and conversation around cannabis and mental health in Canada.

The commission in turn asked the University of Calgary to put together a report that looked at the scope of cannabis and mental health research to identify what is known, what is unknown and what areas should be the focus of future research.

“They realize one of the things that they needed to do before they could kind of launch into where we should go from here is really understand where we are now,” said Fiona Clement, associate professor in the university’s Department of Community Health Sciences and one of the report’s lead authors.

Clement says the research tended to stem from the idea of cannabis being harmful to one’s mental health.

Only two studies evaluated by her team looked at possible benefits.

“We know about 14 per cent of Canadians use cannabis,” she said. “So clearly there is something there that we just haven’t understood yet.”

One gap they identified was that the majority of the research had been done with unspecified populations.

“Like adults without any specificity of age ranges, users — in quotation marks — versus non-users, without any specificity of how often someone is using, what kind of product they’re using, how they’re using it or when they started using it,” she said.

Clement said some of the research outcomes were just mental health issues — without specifying, for example, depression, anxiety or schizophrenia. She says that makes for a lot of unanswered questions.

“We do think that the relationship between cannabis and a specific mental health outcome such as depression would be mediated by the age of the person, when they started smoking, perhaps their cultural contacts, their exposure to negative social determinants of health, the kind of product that they’re using and how they’re using it,” she said.

“And we think that those relationships might be different for different kinds of mental health disorders.”

Read the full article here.

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