Slide 1

Canadian Cohort of
Obstructive Lung Disease

Slide 1

Canadian Cohort of
Obstructive Lung Disease

Slide 1

Canadian Cohort of
Obstructive Lung Disease


CanCOLD is a collaborative Canadian-wide study advancing our knowledge of why people develop COPD, how and why COPD impacts individuals differently, and how we can better care for people affected by this disease




Data Collection Sites


Data Collection Waves



Who We Are

The Canadian Cohort Obstructive Lung Disease (CanCOLD) study is a longitudinal study following 1,500 participants in Canada since 2009. CanCOLD aims to enhance the current understanding of COPD progression and burden, and to better advance COPD prevention, diagnosis and management. Public and private investments of more than $14,000,000 have allowed the CanCOLD study to produce policy-relevant knowledge and innovative solutions having impact on public health and clinical practice. CanCOLD leverages partnerships between researchers and organizations, and also provides opportunities graduate students to be trained and young investigators to participate in innovative respiratory health research projects in many institutions across Canada.

What is COPD ?

COPD (Chronic Obstructive Pulmonary Disease) is a group of diseases including emphysema, chronic bronchitis and non-reversible asthma. COPD results in inflammation and partial blocking of the airways (breathing tubes) in an individual’s lungs, thereby making breathing difficult.

COPD is a long-term disease that tends to get worse over time, and significantly impacts an individual’s health and autonomy. In Canada, 2 million people are living with COPD, a major cause of disability and one of the leading causes of deaths.


leading cause of death


cause of hospitalization
in Canada


in direct and indirect costs
annually in Canada

Latest News

Demo Post

cancold Site
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CanCOLD launches its 4th in-site assessment

Following a 2-year hiatus due to the COVID-19 pandemic, the CanCOLD study is initiating visit 4 in spring 2022. All...
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CanCOLD study shows associations between air pollution and respiratory health in Canada 

CanCOLD researchers demonstrate that exposure to relatively low levels of air pollution in Canada is associated with lower lung function...
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CanCOLD editorial in AJRCCM

Editorial in the American Journal of Respiratory and Critical Care Medicine written by Peter Calverley highlights CanCOLD’s contribution to COPD...
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Play Video

About COPD with Dr Maltais and Dr Marciniuk

Play Video

What is CanDOLD with Dr Bourbeau

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Why take part in the CanCOLD study? Participant perspective with Claude Brouillet


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