What Is Asthma?

Doctors define asthma as a “chronic inflammatory disease of the airway.”

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How To Tell You Have Asthma

Learn about the signs & symptoms of asthma and proper diagnosis.

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Newly Diagnosed? Start Here

Access information and educational resources on living with asthma.

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Medications & Treatment

Learn about the different types of asthma medications and treatment options available.

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Common Asthma Triggers

Triggers often lead to asthma attacks. A trigger is any thing or condition that causes inflammation in the airways, which then leads to asthma symptoms.

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Asthma In Children

Asthma affects the lives of over 850,000 children in Canada. Find out how to best manage your children’s asthma.

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Severe Asthma

What is Severe Asthma? Symptoms, diagnosis, and treatment.

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COVID-19 & Asthma

It is important that you continue to take your prescribed asthma medications during the pandemic. Learn more about COVID-19 and asthma.

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Nasal Polyps & Asthma

Learn about nasal polyps and how they are treated.

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Be Winter Ready: Tips for Managing your Asthma this Season 


Asthma education is key to taking control of your disease and living life symptom-free. If you know how to manage your asthma, you can avoid asthma attacks and stay active.

Download your Asthma Control Toolkit


We advocate for change on issues important to the asthma community, like access to medication. Learn more about how our advocacy initiatives are helping Canadians breathe easy.

Read about our recent advocacy efforts


Our National Research Program supports research into both early-onset and late-onset asthma. Together we are working to further our understanding of asthma and one day unlock a cure.

You Can Help Stop Asthma Attacks

There are over 3.8 million Canadians living with asthma in Canada, and every year an estimated 250 Canadians lose their lives to the disease. You can help change that. By supporting Asthma Canada, you fund asthma education, advocacy and research to stop asthma attacks today, and unlock a cure tomorrow. 


Asthma Canada’s Position Statement:

Appropriate Use of Oral Corticosteroids in Asthma

Asthma Canada Advocates for Provinces and Territories to Follow NACI Guidelines for COVID-19 Booster Shots

Person holding survey on a mobile device

Read now: Asthma Canada’s 2021 Annual Asthma Survey Report 

Prepare for Flu Season

Read now: Optimizing Vaccination Rates in Canadians with Lung Disease