Evidence Briefs

Consolidated overviews of the state of medicinal cannabis across various clinical and research areas. Through Evidence Briefs, the Centre aims to highlight existing research evidence as well as opportunities for further investigations.



  • Lower-risk cannabis use guidelines

    November 1, 2017
    • Evidence Briefs
    • Latest
    Key Takeaways: Cannabis users can reduce the risk of harm by avoiding high-risk practices, most notably: use before early-mid twenties, use of high-THC product, combustion inhalation, daily use, and driving while impaired.
  • Who shouldn't use medicinal cannabis?

    November 1, 2017
    • Evidence Briefs
    • Latest
    When recommending any therapy, a healthcare provider and patient need consider both the potential benefits and risks. What information is available to guide them when it comes to medical cannabis? [...]
  • What’s in your medicinal cannabis?

    November 1, 2017
    • Archive
    • Evidence Briefs
    Health Canada claims it has put into place “some of the most stringent controls on the medical cannabis industry in the world.” Under these regulations, only specific pesticides and fungicides are registered for use by licensed cannabis producers. [...]
  • The case of California

    November 1, 2017
    • Archive
    • Evidence Briefs
    In 1996, California became the first U.S. state to legalize medical cannabis with the passage of a public referendum, Proposition 215. [...]
  • The criminalization and legalization of medicinal cannabis in Canada

    November 1, 2017
    • Archive
    • Evidence Briefs
    The decision to allow or not allow the use of cannabis for medical purposes in Canada is based on objective analysis of the facts, isn’t it? The truth may be surprising. [...]
  • Rheumatologists and medicinal cannabis

    November 1, 2017
    • Archive
    • Evidence Briefs
    One out of every five Canadian adults 18 and older has chronic pain, and the most common cause (up to 36% of cases) is arthritis. As of 2015, almost six million Canadian adults have some form of arthritis and the number is expected to increase rapidly as the population ages. [...]
  • Cannabis Smoking and Effects on the Respiratory System

    April 27, 2018
    • Evidence Briefs
    • Latest
    This Evidence Brief will summarize what is known about smoking cannabis and its acute and chronic effects on the respiratory system.
  • Cannabis Legalization and Opioid-Related Mortality

    April 6, 2018
    • Evidence Briefs
    • Latest
    Preliminary evidence suggests that legal availability of cannabis for recreational purposes may reduce opioid-related deaths, at least in the short-term.
  • What does the evidence show about cannabis for veterans with PTSD?

    April 2, 2018
    • Evidence Briefs
    • Latest
    A 2016 survey of almost 2,800 regular force veterans found approximately one out of six (16.4%) reported posttraumatic stress disorder (PTSD). This Evidence Brief reviews the literature regarding prescribing cannabis for PTSD in a veteran popluation.
  • Medicinal cannabis: Back to the future

    November 1, 2017
    • Archive
    • Evidence Briefs
    One of the arguments used by those promoting medical cannabis is that it has a long history as a therapeutic agent. Written records of its use in China date back to the first century A.D., although oral traditions suggest it was used by as early as 2700 B.C. [...]
  • When is a prescription not a prescription?

    November 1, 2017
    • Archive
    • Evidence Briefs
    Under Canada’s Access to Cannabis for Medical Purposes Regulations (ACMPR), physicians or nurse practitioners have the authority to write was has been broadly described as “prescriptions” for medical cannabis. But in fact, these are not prescriptions in the traditional sense. [...]
  • Who should prescribe medicinal cannabis?

    November 1, 2017
    • Archive
    • Evidence Briefs
    Who can prescribe medical cannabis varies substantially according to what country – or even what province or state – in which you live. [...]
  • Who could benefit from medicinal cannabis?

    November 1, 2017
    • Evidence Briefs
    • Latest
    Type “benefits of medical cannabis” into Google and you’ll get links to articles such as “23 Health Benefits of Marijuana” and “50 unexpected benefits of cannabis (you might not know).” Sounds great. Given this sort of hype, it’s not surprising that large proportions of physicians say they had been asked by patients to approve medical cannabis. [...]