Climate change and health: Health effects
On this page
- Adapting to the health effects of climate change
- Assessing the health effects of climate change
- Understanding the health effects of climate change
- Vector-borne and zoonotic diseases
- Mitigation and health effects
- More information
Adapting to the health effects of climate change
Governments, industries, communities and individuals are working to reduce greenhouse emissions. At the same time, there are a variety of actions which can be taken to help minimize the risks to health.
Climate change "adaptation" refers to changes that we can make at many levels to reduce the health impacts from the hazards that a changing climate can generate, such as floods, extreme heat events, air pollution and infectious diseases.
In December 2007, the Government committed to help Canadians adapt to the challenges of a changing climate and its impacts. Several initiatives are underway, which will contribute to reducing health risks. They include:
- improved climate change scenarios
- regional adaptation work programs
- assessment of key vulnerabilities in Northern/Inuit communities
- climate and infectious health alert and response systems
- climate change and health adaptation in Northern/Inuit communities
Many of these programs will build on current health policies and practices - such as infectious diseases monitoring and surveillance, and emergency preparedness and response planning.
Assessing the health effects of climate change
Events have illustrated that both developed and under-developed countries can be overwhelmed by climate-related events, and that people living in Canada could be vulnerable. In response, the Government of Canada is assessing the health impacts of a changing climate.
Natural Resources Canada led a national assessment of climate change vulnerabilities, From Impacts to Adaptation: Canada in a Changing Climate 2007 which discusses current and future risks and opportunities that climate change presents to Canada from a regional perspective.
Health Canada has studied the current and anticipated effects to health of a changing climate and Canada's ability to adapt. An in-depth assessment of this integrated information is reported on in the following publication.
Human health in a changing climate: A Canadian assessment of vulnerabilities and adaptive capacity
Building on the research and findings of the Natural Resources Canada evaluation, Health Canada's assessment reports on the scope and magnitude of the current and potential health impacts of climate change in Canada related to air quality, infectious disease and natural hazards. It also examines Canada's capacity to respond.
If you would like to order a hardcopy version and/or a CD of the assessment report, please contact Health Canada's Publications.
Recognizing that extreme heat events present a public health issue in Canada, Health Canada has launched a three-year heat initiative entitled Developing Heat Resilient Communities and Individuals in Canada. This project will pilot heat alert and response systems, publish a guidebook, and create health care worker guidelines for heat events.
Understanding the health effects of climate change
Climate change is affecting health, and will continue to pose challenges in the future. Because of Canada's large land mass, Canadians can expect a wide range of impacts which will vary from one region to another.
The extent of these effects depends on how quickly our climate changes, and on how well we adapt to the new environmental conditions and risks to health.
How climate change affects the health of Canadians
Health Canada has identified seven categories of climate-related impacts, and the potential effects these can have on health and well-being.
- Temperature-related morbidity and mortality
- Illness related to extreme cold and heat events
- Respiratory and cardiovascular illnesses
- Increased occupational health risks
- Weather-related natural hazards
- Damaged public health infrastructure
- Injuries and illnesses
- Social and mental stress
- Increased occupational health hazards
- Population displacement
- Air quality
- Increased exposure to outdoor and indoor air pollutants and allergens
- Respiratory diseases
- Heart attacks, strokes and other cardiovascular diseases
- Water- and food-borne contamination
- Intestinal disorders and illnesses caused by chemical and biological contaminants
- Health effects of exposure to ultraviolet rays
- Skin damage and skin cancer
- Disturbed immune function
Vector-borne and zoonotic diseases
Mitigation and health effects
While it is important to adapt to risks to health posed by climate change, reducing greenhouse gas emissions can also result in health benefits. By decreasing the burning of fossil fuels, we not only lower our emissions of harmful greenhouse gases which may reduce the severity of some of the health effects listed above, but can also lessen the release of toxic pollutants known to affect the health of people and ecosystems.
- One Health
- Public Health and the Clean Air Agenda
- Environmental Public Health and Climate Change
- Public Health Agency of Canada and Sustainable Development
- 2014-15 PHAC Departmental Sustainable Development Strategy
- Statement from Canada's Chief Public Health Officer on the Launch of the Infectious Diseases and Climate Change Fund
- Pilot Infectious Disease Impact and Response Systems (PIDIRS) Program
- Preventative Public Health Systems and Adapting to a Changing Climate Program
- An Assessment for the Development of a National Surveillance System for Travel-Acquired Enteric Disease
- The Chief Public Health Officer's Report on the State of Public Health in Canada 2014 - Public health in a changing climate
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