In this Wednesday, Oct. 9, 2019 photo, a customer sniffs a display sample of marijuana, in a tamper-proof container secured with a cable, sold at Evergreen Cannabis, a marijuana retail shop, in Vancouver, B.C. (AP Photo/Elaine Thompson)

Cannabis could help those struggling with PTSD, B.C. study finds

Canada has one of the highest rates of PTSD worldwide at 9.2 per cent.

Using cannabis could help people who are struggling with post-traumatic stress disorder, a B.C. study has found.

The study, a partnership between the B.C. Centre on Substance Use and the University of B.C., found that having PTSD was strongly associated with suffering a major depressive period and suicidal ideation among people who did not use cannabis. The link was not present in those who did use cannabis.

The data, published Tuesday in the Journal of Psychopharmacology, is the first of its kind, said lead author and BCCSU research associate Stephanie Lake.

The key, she said, was being able to use Statistics Canada data rather than waiting for clinical trials to finish up.

“There’s really been a rise in the number of Canadians who were using cannabis for PTSD,” Lake said. “We’ve seen a lot of patient reports of success with PTSD and cannabis, but we’ve yet to see a clinical study.”

The researchers used data related to the cannabis use and mental health of 24,000 people, and drew conclusions about how the drug interacts with the disorder. The information is particularly relevant in Canada, which has one of the highest rates of PTSD worldwide at 9.2 per cent of the population.

Of the 24,089 people in the study, 420 had a current PTSD diagnosis. Of those, 106 people, or 28.2 per cent, reported using cannabis in the past year, compared to 11.2 per cent of those who did not have PTSD.

Non-users with PTSD were seven times more likely to have a major depressive episode and nearly five times more likely to have suicidal thoughts, compared with users of cannabis.

Lake, who is also a PhD student at UBC’s School of Population and Public Health, said the research was too broad to discern why cannabis had the effect it did, but it did point to what use was most helpful for PTSD.

“We saw that compared to non-users, lower risk [cannabis] users were at a reduced likelihood of major depressive episodes and suicidal ideation, but higher risk users were at a higher chance,” she said. Higher-risk users show signs of cannabis use disorder, which is a compulsive use of pot and an inability to stop.

M-J Milloy, a professor of cannabis science at UBC, said the findings open up further avenues to study cannabis.

“One of the important results of the study is it really supports our plans to move forward with clinical trials,” he said.

“There’s clearly lots of patients self-medicating with cannabis, but there’s a real gap with our clinical knowledge.”

Milloy said legalization and regulation would help narrow what kinds of cannabis work best for PTSD, because patients and researchers would be assured of the strain and the THC or CBD content.

“We know that many people believe certain strains of cannabis work better, [while] some people want to use cannabis edibles, or prefer high CBD,” he said.

“As scientists, we want figure out if these preferences are real so we can optimize them for PTSD treatment.”

READ MORE: Canadian study links teenage pot use to increased risk of suicidal behaviour

READ MORE: B.C. company gets licence to test psychedelic drugs for therapy treatment


@katslepian

katya.slepian@bpdigital.ca

Like us on Facebook and follow us on Twitter.

Just Posted

Royals fall short to Lakers in five-set nailbiter

After winning the first two sets, the Royals dropped the last three 25-22, 25-20 and 15-13

Pipeline camp workers to buy locally, TC Energy says

As preparations for TC Energy’s Coastal GasLink (CGL) pipeline project pick up… Continue reading

Village eyes new mass communication system

A new mass communication system might provide emergency information more easily for… Continue reading

Chamber to get electronic locks

The Burns Lake and District Chamber of Commerce building will soon get… Continue reading

Training on a virtual road

Brent Boogaart drives a plow truck simulator inside a trailer at Lakes… Continue reading

VIDEO: ‘Climate emergency’ is Oxford’s 2019 Word of the Year

Other words on the shortlist included ‘extinction,’ ‘climate denial’ and ‘eco-anxiety’

Canucks erupt with 5 power-play goals in win over Nashville

Vancouver ends three-game slide with 6-3 triumph over Predators

65-million-year-old triceratops makes its debut in Victoria

Dino Lab Inc. is excavating the fossilized remains of a 65-million-year-old dinosaur

B.C. widow suing health authority after ‘untreatable’ superbug killed her husband

New Public Agency Health report puts Canadian death toll at 5,400 in 2018

Changes to B.C. building code address secondary suites, energy efficiency

Housing Minister Selina Robinson says the changes will help create more affordable housing

Security guard at Kamloops music festival gets three years for sexually assaulting concertgoer

Shawn Christopher Gray walked the woman home after she became seperated from her friends, court heard

Algae bloom killing farmed fish on Vancouver Island’s West Coast

DFO says four Cermaq Canada salmon farms affected, fish not infectious

Most Read