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Canadian Medical Association Journal


Measles immunity 90% in BC’s Lower Mainland

A recent study found that 90% of people in BC's Lower Mainland have detectable antibodies against measles, indicating high vaccine coverage and population protection. However, the study also found lower immunity rates among older adults, with only 75% of those aged 20-39 having measurable antibodies.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeObservational study·DateOct 14, 2025

Traumatic brain injuries in older adults linked to increased risk of dementia

New traumatic brain injuries in older adults are associated with a higher risk of developing dementia. Research published in the Canadian Medical Association Journal found that TBI is linked to an increased rate of incident dementia, even when sustained in late life, and how this risk changes over time.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeObservational study·DateOct 6, 2025

Virtual care expansion did not expand specialist access in rural areas

A study found that virtual care expansion in Ontario did not lead to a significant increase in specialists' practices in rural areas. Despite the widespread availability of virtual care and changes in remuneration, the researchers discovered that specialist physicians did not expand their reach to patients living at great distances.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeObservational study·DateSep 22, 2025

Research as reconciliation: Oil sands and health

A community-led study found elevated contaminants in animal food sources and rare cancers in local populations, highlighting the need for comprehensive studies on oil sands' health impacts. The authors call for rigorous research to address TRC commitments and protect Indigenous Peoples' environment and health.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeCommentary/editorial·DateSep 15, 2025

Black youth, especially Black girls, use mental health services less than their White peers

New research published in CMAJ found that Black adolescents with mental distress are less likely to access mental health care, with Black girls being the least likely. The study highlights the need for culturally responsive and sex-specific adaptations to care, as well as policy changes to equalize mental health service use.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeObservational study·DateSep 8, 2025

New guideline offers menu of options to help people quit smoking tobacco

A new guideline from the Canadian Task Force on Preventive Health Care provides a menu of effective options to help people quit smoking, including behavioural and medication options. The guideline aims to address the challenges of nicotine addiction and offers personalized choices for quitting tobacco.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeSystematic review·DateAug 25, 2025

Pharmacotherapy for the management of obesity — an updated guideline

The updated Canadian Adult Obesity Clinical Practice Guideline recommends a personalized approach to treating obesity, focusing on waist circumference, waist-to-hip ratio, and waist-to-height ratio. Two new medications, tirzepatide and setmelanotide, are included in the guideline for managing obesity-related complications.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateAug 11, 2025

Helping Canada lead in health innovation

Dr. Muhammad Mamdani advocates for reframing Canada's approach to funding health research and commercialization to focus on clinical uses and align with healthcare organizations. This will help reduce the failure rate of health start-ups, which are often disconnected from clinical environments.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeCommentary/editorial·DateJul 28, 2025

Supporting autistic patients in health care

The article highlights the need for healthcare providers to understand autism and its diversity, as well as actively ask about patients' lived experiences. Additionally, suggestions are provided on adapting healthcare delivery and environments, tailoring communications, and addressing barriers faced by autistic individuals with margina...

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeLiterature review·DateJul 14, 2025

Growing crisis of communicable disease in Canada in tandem with US cuts

A growing crisis of communicable diseases is unfolding in North America, with Canada's health systems being hampered by US cuts to public health and research infrastructure. The spillover effect of these changes will likely affect Canada and other countries globally, compromising disease surveillance and public health preparedness.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeCommentary/editorial·DateJul 2, 2025

Sea change in cancer care requires urgent action to strengthen oncology workforce, care delivery

Rapid advances in cancer treatment have improved long-term survival rates, but current resources and models of care in Canada do not meet the changing needs of people with cancer. The authors propose solutions such as reducing unnecessary surveillance and establishing interdisciplinary specialty clinics.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeLiterature review·DateJun 2, 2025

Opioid prescribing standards changed practices in BC, but with caveats

The introduction of BC's opioid prescribing standard in 2016 led to a reduction in opioid prescriptions and doses, as well as declines in high-dose prescribing and coprescribing with benzodiazepines. However, this change also resulted in increased aggressive tapering of medications, which can lead to improper pain management.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeData/statistical analysis·DateMay 12, 2025

Local access to abortion services expanded with mifepristone in community pharmacies

The expansion of mifepristone to community pharmacies has increased access to abortion services in Ontario, with the proportion of regions with a pharmacy or procedural provider growing from 20% to 82%. The study found that access to abortion services improved in both urban and rural areas.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeData/statistical analysis·DateApr 7, 2025

No increased death rates, admission differences for people experiencing homelessness with severe COVID-19

A recent Canadian Medical Association Journal study found no differences in in-hospital deaths or hospital admission rates between people experiencing homelessness and housed patients with severe COVID-19. However, those experiencing homelessness were less likely to be admitted to the intensive care unit or intubated.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeObservational study·DateMar 17, 2025

Optimizing public placement of naloxone kits to save lives

Researchers found that placing naloxone kits at public transit locations using an optimization strategy and ensuring blanket placement at take-home naloxone program locations effectively covered a major proportion of opioid poisonings in Vancouver. The study suggests that easy accessibility of kits is crucial to prevent deaths from opi...

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeComputational simulation/modeling·DateMar 17, 2025

Hallucinogen use linked to 2.6-fold increase in risk of death for people needing emergency care

A new study found that people seeking emergency care for hallucinogen use were at a 2.6-fold higher risk of death within 5 years compared to the general population. The increased risk was highest among individuals with medical comorbidities and those from low-income neighborhoods.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeObservational study·DateMar 3, 2025

Legionnaires’ disease from a lake swim

Swimming in lakes with still water can lead to infection with Legionella bacteria, causing pneumonia. Risk factors include age over 50, smoking history, and compromised immune systems. Clinicians should suspect legionnaires' disease in patients with severe pneumonia and recent travel history.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeCase study·DateFeb 18, 2025

Opioid prescriptions in the ED linked to small increases in future opioid use, hospitalizations

A study found that patients who received opioid prescriptions in the emergency department were more likely to receive additional opioid prescriptions or require hospital admissions in the following year. Patient characteristics, such as age and health conditions, played a significant role in determining risk.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeData/statistical analysis·DateFeb 10, 2025

Alcohol-related deaths up 18% during pandemic

New research reveals a 18% increase in alcohol-related deaths in Canada during the pandemic, with higher increases in 2020 and 2021. The study also found increased hospitalizations related to alcohol use, particularly among younger adults and females, suggesting potential early warning signs for future liver-related disease.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeData/statistical analysis·DateFeb 3, 2025

Move more, age well: Prescribing physical activity for older adults as a recipe for healthy aging

A review article discusses the importance of physical activity in preventing disease and improving functional independence among older adults. Higher levels of physical activity are associated with improved cognition, mental health, and quality of life, and can potentially add years to an individual's life.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeLiterature review·DateJan 27, 2025

One in 20 people in Canada skip doses, don’t fill prescriptions because of cost

A new study found that 5% of Canadian respondents skipped or reduced dosages due to cost-related issues. The research highlights the burden of prescription costs on vulnerable populations, including females, bisexual, and Indigenous individuals. The authors suggest that national pharmacare plans can help address these disparities.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeData/statistical analysis·DateNov 25, 2024

HPV vaccination switch to 1-dose gender-neutral approach

A new Canadian study models a 1-dose HPV vaccination approach and finds it could prevent a similar number of cervical cancers as 2 doses if vaccine protection remains high. The switch is projected to be a more efficient use of vaccine doses, potentially eliminating cervical cancer in Canada by 2040.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeComputational simulation/modeling·DateOct 7, 2024