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Climate Change and Human Health

https://policybase.cma.ca/en/permalink/policy9809
Last Reviewed
2018-03-03
Date
2010-06-09
Topics
Population health/ health equity/ public health
  1 document  
Policy Type
Policy document
Last Reviewed
2018-03-03
Date
2010-06-09
Topics
Population health/ health equity/ public health
Text
Climate Change and Human Health Background Climate change is increasingly recognized as a significant threat facing society and has the potential to be one of the greatest threats to human health in the 21st Century1. While the damage is being done now, many of the health effects may arise only decades in the future2. Possible impacts could include some or all of the following: * Increased mortality, disease and injuries from heat waves and other extreme weather events; * Continued change in the range of some infectious disease vectors (i.e. 260-320 million more cases of malaria predicted by 2080, with six billion more at risk for dengue fever); * Effects on food yields- increased malnutrition; * Increased flooding in some areas and increased droughts in others, along with other impacts on freshwater supply; * Increases in foodborne and waterborne illnesses; * Warming and rising sea levels adding to displacement and also impacting water supply through salination; * Impaired functioning of ecosystems; * Negative effects on air quality associated with ground level ozone, including increases in cardio-respiratory morbidity and mortality, asthma, and allergens; * Displacement of vulnerable populations (especially in coastal areas)1; and * Loss of livelihoods3. Most of the impacts of climate change will result from amplifying the existing health hazards found in populations4. How susceptible a population is to the effects of climate change is dependent on their existing vulnerabilities (i.e. disease burden, resources etc.) as well as their adaptive capacity5. The World Health Organization has projected that countries that have, and will likely continue to suffer the greatest effects, are those who have contributed the smallest amount to the causes of climate change.6 While the vast majority of climate change deaths will occur in developing countries with systemic vulnerabilities, a recent Health Canada report has noted that Canada is likely to experience higher rates of warming in this century than most other countries in the world. Climate change scenarios predict an increased risk of extreme weather and other climate events for all regions of Canada, with the exception of extreme cold7. Canadians most vulnerable to climate change include seniors, children and infants, socially disadvantaged individuals, and those with pre-existing medical conditions such as cardiovascular disease8. Those living in cities could be especially vulnerable due to the impact of the heat island effect. However, given their greater access to emergency, health, social, and financial resources, they might also have the greatest adaptive capacity9. The health consequences of climate change have the potential to be more severe in far northern regions. Populations in Canada's north including aboriginals have already begun to see differences in their hunting practices as a result of changing ice patterns10, and the melting of permanent snowpacks11. Changes in ice patterns have also led to increased injuries12. In some places in the North, climate changes have led to greater risks from avalanches, landslides and other hazards13. Further problems are related to the infrastructure in Northern Canada, with some communities already noticing degradation of structures due to the thawing of the permafrost14. Given that much of the Northern infrastructure is already in disrepair, this represents a considerable problem. Geographic isolation, and a lack of resources may further exacerbate the situation15. What CMA has done? Physicians have a critical role to play in advancing public understanding of the potential impact of climate change on health and promoting health protecting responses. The CMA has been working on the issue of climate change and human health for a number of years. CMA was supportive of Canada's ratification of the Kyoto Protocol, and urged the Government of Canada to commit to choosing a climate change strategy that satisfied Canada's international commitments while also maximizing the clean air co-benefits and smog-reduction potential of any greenhouse gas reduction initiatives. In 2007, a number of resolutions were passed at General Council calling on government to properly plan for the health impacts of climate change and put in place measures to mitigate the impact of climate change on vulnerable populations in Canada's north. In that same year, CMA and the Canadian Nurses Association updated a joint position statement first entered into in 1994 calling for environmentally responsible activity in the health-care sector. Most recently, the CMA has been an integral part of the drafting of the World Medical Association (WMA) policies on health and climate change. The WMA Declaration of Delhi on Health and Climate Change was adopted at its annual General Assembly in New Delhi, India in October 2009, The declaration calls for action in five main areas; advocacy to combat global warming; leadership-help people be healthy enough to adapt to climate change; education and capacity building; surveillance and research; and collaboration to prepare for climate emergencies. This policy is written to complement the WMA declaration. What needs to be done? Climate change may lead to significant impacts on human health. While it is unlikely that these outcomes can be avoided, there are some strategies that can be employed to help limit the negative consequences. Education and Capacity Building There is a need for greater public and health professional awareness and education about climate change in order to gain understanding of the health consequences and support for strategies to reduce green house gases and mitigate climate change effects. CMA recommends: 1. A national public awareness program on the importance of the environment and global climate change to personal health; 2. Encouraging health sciences schools to enhance their provision of educational programs on environmental health; and fostering the development of continuing education modules on environmental health and environmental health practices. Surveillance and Research There are important gaps in our knowledge on the health impacts of climate change as well as the effectiveness of various mitigation and adaptation strategies. Surveillance and reporting functions need to be strengthened to allow for greater accuracy in modeling of future impacts. CMA recommends: 3. That the federal government must address the gaps in research regarding climate change and health by undertaking studies to - quantify and model the burden of disease that will be caused by global climate change - identify the most vulnerable populations, the particular health impacts of climate change on vulnerable populations, and possible new protections for such populations; - increase the collection and accuracy of health data, particularly for vulnerable and underserved populations; - report diseases that emerge in conjunction with global climate change, and participate in field investigations, as with outbreaks of infectious diseases; and - develop and expand surveillance systems to include diseases caused by global climate change. Reducing the Burden of Disease to Mitigate Climate Change Impacts How susceptible a population is to the effects of climate change is dependent on their existing vulnerabilities. Therefore, work needs to be done to reduce the burden of diseases and improve upon the social determinants of health for vulnerable populations in Canada and globally. CMA recommends: 4. That the federal and provincial/territorial governments work together to improve the ability of the public to adapt to climate change and catastrophic weather events by - Encouraging behaviours that improve overall health, - Creating targeted programs designed to address specific exposures, - Providing health promotion information and education on self-management of the symptoms of climate-associated illness, - Ensuring physical infrastructure that allows for adaptation; 5. That the federal government develop concrete actions to reduce the health impact of climate-related emissions, in particular those initiatives which will also improve the general health of the population; 6. That the federal government support the Millennium Development Goals and support the principles outlined in the WHO Commission on the Social Determinants of Health report; and Preparing for Climate Emergencies To deal with the future burden of climate change related health issues there is a need to ensure adequate health capacity and infrastructure. Rebuilding of public health capacity globally is seen as the most important, cost-effective, and urgently needed response to climate change16. Domestically, there is a need to ensure adequate surge capacity within the health care system to be prepared for an increase in illness related to climate change effects. There is also a need to strengthen not only the health systems, but the infrastructure (i.e. housing) for vulnerable populations including Aboriginals and those in the North. CMA recommends that the federal and provincial /territorial governments work together to: 7. Strengthen the public health system both domestically and internationally in order to improve the capacity of communities to adapt to climate change; 8. Ensure adequate surge capacity within Canada's health system to handle the increase in climate change related illness; 9. Ensure the health of vulnerable populations is adequate to handle climate change related situations; 10. Develop knowledge about the best ways to adapt to and mitigate the health effects of climate change; 11. Integrate health professionals into the emergency preparedness plans of government and public health authorities so that front-line providers are adequately informed and prepared to properly manage any health emergencies. Advocacy to Combat Climate Change Finally, there is a need to take action to reduce the damaging effects of climate change. The global community needs to come together to reduce the levels of green house gases being released in the atmosphere, and focus on safer more environmentally friendly energy sources. Investments in cuts to greenhouse gas emissions would greatly outweigh their costs, and could help to reduce the future burden of climate change related illness17. CMA recommends: 12. That the government of Canada become a global leader in promoting equitable, carbon neutral economic, industrial, and social policies, and practices that fight global warming and adopt specific green house gas reduction targets as determined by the evolving science of climate change. 13. That health care professionals act within their professional settings to reduce the environmental impact of medical activities and to develop environmentally sustainable professional settings; 14. That all Canadians act to minimize individual impacts on the environment, and encourage others to do so, as well. Conclusions The CMA believes that Canada must prepare now for the potential health threat that climate change poses to its population. While many of these effects will take decades to materialize, certain populations, such as those in Canada's north, or those in low lying coastal areas, are already starting to experience the impact of climate change. A focus on education and health promotion, as well as advocacy for improved public policy and primary health care resources will be a good start in dealing with this issue. Additionally, further research and data collection is necessary to improve our understanding of climate change and the effectiveness of adaptation and mitigation strategies. Finally, the global community needs to act together to address the health and environmental impacts of climate change. By working together, in an international response, strategies can be implemented to mitigate any negative health effects of climate change. Canada's physicians believe that: What is good for the environment is also good for human health. It is past time for those of us in the health sector in Canada to engage fully in the debate and discussions within our own house, as well as in the broader body politic to ensure that protecting human health is the bottom line of environmental and climate change strategies. Bibliography 1 Currently a third of the world's population lives within 60 miles of the shoreline and 13 of 20 biggest world cities located on the coast- more than a billion people could be displaced (Costello et.al., 2009) 1 Costello, Anthony et.al. "Managing the health effects of climate change.' The Lancet Volume 373 May 16, 2009. pp.1693-1733. 2 World Health Organization, World Meteorological Organization & United Nations Environment Programme (2003) Climate Change and Human Health- Risks and Responses, Summary. Available at: http://www.who.int/globalchange/climate/en/ccSCREEN.pdf 3 Confalonieri et.al., (2007) Human Health. Climate Change 2007: Impacts, Adaptation and Vulnerability. Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Available at: http://www1.ipcc.ch/pdf/assessment-report/ar4/wg2/ar4-wg2-chapter8.pdf ; Epstein, Paul R. "Climate Change and Human Health." The New England Journal of Medicine 353 (14) October 6, 2005.; Friel, Sharon; Marmot, Michael; McMichael, Anthony J.; Kjellstrom, Tord & Denny Vagero. "Global health equity and climate stabilization: a common agenda." The Lancet Volume 372 November 8, 2008. pp.1677-1683. 4Confalonieri et.al., (2007) Human Health. Climate Change 2007: Impacts, Adaptation and Vulnerability. Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Available at: http://www1.ipcc.ch/pdf/assessment-report/ar4/wg2/ar4-wg2-chapter8.pdf; World Health Organization (2009) Protecting Health From Climate Change: Global research priorities. Available at: http://whqlibdoc.who.int/publications/2009/9789241598187_eng.pdf 5 Health Canada (2001) Climate Change and Health & Well-being: A Policy Primer Available at: http://www.hc-sc.gc.ca/ewh-semt/pubs/climat/policy_primer-abecedaire_en_matiere/index-eng.php 6 Campbell-Lendrum, Diarmid; Corvalan, Carlos & Maria Neira "Global climate change: implications for international public health policy." Bulletin of the World Health Organization. March 2007, 85 (3) pp.235-237 7 Seguin, Jacinthe & Peter Berry (2008) "Human Health in a Changing Climate: A Canadian Assessment of Vulnerabilities and Adaptive Capacity, Synthesis Report." Health Canada Available at: http://www.nbhub.org/hubfiles/pdf/HealthinChangingClimate_Synthesis_english_low.pdf 8 Health Canada (2002) Climate Change And Health & Well-Being: A Policy Primer for Canada's North. Available at: http://dsp-psd.pwgsc.gc.ca/Collection/H46-2-02-290E.pdf 9 Seguin, Jacinthe & Peter Berry (2008) "Human Health in a Changing Climate: A Canadian Assessment of Vulnerabilities and Adaptive Capacity, Synthesis Report." Health Canada Available at: http://www.nbhub.org/hubfiles/pdf/HealthinChangingClimate_Synthesis_english_low.pdf 10 Ibid 11 Health Canada (2002) Climate Change And Health & Well-Being: A Policy Primer for Canada's North. Available at: http://dsp-psd.pwgsc.gc.ca/Collection/H46-2-02-290E.pdf 12 Epstein, Paul R. "Climate Change and Human Health." The New England Journal of Medicine 353 (14) October 6, 2005. 13 Seguin, Jacinthe & Peter Berry (2008) "Human Health in a Changing Climate: A Canadian Assessment of Vulnerabilities and Adaptive Capacity, Synthesis Report." Health Canada Available at: http://www.nbhub.org/hubfiles/pdf/HealthinChangingClimate_Synthesis_english_low.pdf 14 Field, Christopher B. et.al. (2007) North America. Climate Change 2007: Impacts, Adaptation and Vulnerability. Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Available at: http://www1.ipcc.ch/pdf/assessment-report/ar4/wg2/ar4-wg2-chapter14.pdf 15 Health Canada (2002) Climate Change And Health & Well-Being: A Policy Primer for Canada's North. Available at: http://dsp-psd.pwgsc.gc.ca/Collection/H46-2-02-290E.pdf 16 World Health Organization, World Meteorological Organization & United Nations Environment Programme (2003) Climate Change and Human Health- Risks and Responses, Summary. Available at: http://www.who.int/globalchange/climate/en/ccSCREEN.pdf 17 Campbell-Lendrum, Diarmid; Corvalan, Carlos & Maria Neira "Global climate change: implications for international public health policy." Bulletin of the World Health Organization. March 2007, 85 (3) pp.235-237
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Lessons from the frontlines: A collaborative report on Pandemic H1N1

https://policybase.cma.ca/en/permalink/policy9840
Last Reviewed
2018-03-03
Date
2010-08-26
Topics
Population health/ health equity/ public health
  1 document  
Policy Type
Policy document
Last Reviewed
2018-03-03
Date
2010-08-26
Topics
Population health/ health equity/ public health
Text
Lessons from the frontlines: A report on Pandemic H1N1 from Canadian Medical Association, The College of Family Physicians of Canada, National Specialty Society for Community Medicine One year ago, a novel influenza virus claimed its first victim in Mexico, and soon the world was plunged into its first influenza pandemic in 40 years. Although pandemic H1N1 (pH1N1) swept across the globe, we were fortunate this time as the virus was far less virulent than first feared. Now that pH1N1 has peaked and faded, it is time to look at what we learned and how it will help us plan for the next national public health emergency. The College of Family Physicians of Canada, the National Specialty Society for Community Medicine and the Canadian Medical Association have joined together to present a picture of lessons learned from the front lines of the pandemic. Together we represent over 80,000 physicians, of whom almost 50,000 are family physicians, engaged in all aspects of Canada's health care and public health systems. Canada's experience with SARS in 2003 was a "wake-up call"; much changed in its aftermath. The creation of the Public Health Agency of Canada led by a chief public health officer and the Pan-Canadian Public Health Network increased Canada's ability to respond to a public health emergency like pH1N1. The Canadian Pandemic Influenza Plan for the Health Sector, as well as complementary provincial and territorial plans, provides a framework and approach to responding to a pandemic. In many ways, this planning paid off. Canada mobilized quickly in response to the pH1N1 threat. Morbidity and mortality were lower than feared, and 45% of the population was vaccinated. But this response can also be seen as a "dress rehearsal" for a more severe influenza pandemic or some other national public health emergency: a test of our plans and an opportunity to learn from experience, with the time to incorporate these lessons into our strategic planning. Those on the front lines of response understand how health emergencies test our entire system - public health, acute and primary care and the community-based family physician. The success of our response depends on planning and practice, the effectiveness of public health and clinical countermeasures, our health human resources, the surge capacity within our health care and public health systems and our ability to reach the public. One of our greatest challenges in Canada is also to establish a coherent national and provincial/territorial strategy that can be implemented at a local level. Although we believe that Canada's overall response to pH1N1 produced many success stories, there were circumstances that challenged us as health professionals. Both health care and public health need further strengthening, and their separate infrastructures and the interdependence between these structures need attention and bolstering. The following comments focus on two overarching areas that influenced our ability to respond to the pandemic: communications and health system integration. Communications Communication was a consistent source of concern. Channels of communication among the various levels of public health providers were stronger than those for primary care providers, especially family physicians. On 9 Aug. 2009, following the first wave of pH1N1, our leaders wrote to chief public health officer of Canada Dr. David Butler-Jones on behalf of our members to share their thoughts and recommendations on how to improve communications with physicians. Family physicians in particular, but also other front-line health care providers, needed communication that was tailored to the practice setting, resources that were easy to access, and clear messages written in a manner that allowed rapid implementation into clinical practice during health emergencies because the timing of clinical response was critical. We recommended that front-line clinical practitioners be involved in the development of guidelines and the strategies for their dissemination, so that the content could be linked directly to the clinical setting. Family physicians are part of our first line of defence during infectious disease outbreaks. To ensure optimum patient care, they need clinical guidance quickly. Many physicians felt that the urgent need to provide consistent, clinically relevant information was not well recognized by the Public Health Agency of Canada (PHAC), the Public Health Network and, in some cases, provincial, territorial, regional or local levels. It took three months after recognition of the emerging pandemic to publish Interim Guidance for Ambulatory Care of Influenza-like Illness in the Context of H1N1. The current Public Health Network process of federal/provincial/territorial (FPT) consultation and consensus building seemed ill-suited to the acute national need for clinical information on issues such as the use and prescription of anti-viral medications. As provincial authorities and professional medical organizations moved to fill the void, different approaches and recommendations arose independent from one another. Better integration of primary care response by a national organization such as PHAC and the provincial/territorial health ministries could address the needs of clinical practitioners in concert with public health responses. This would also ensure that care directives are translated into user-friendly formats appropriate to clinical settings. We were pleased to be able to work with PHAC in fall 2009 to produce Pandemic H1N1: Fast Facts for Front-line Clinicians. This resource was highly valued by many of our members, and the collaboration demonstrated how health organizations can work effectively with government to contribute their expertise to the development and distribution of appropriate, clinically relevant information. Nevertheless, our critics declared that it was too little, too late. In situations where scientific evidence is rapidly changing, the processes used to distribute information to both front-line public health and clinical professionals must be designed to avoid confusion. Coordinated, unified communication strategies are needed at the national, provincial/territorial and local levels. Regardless of the official source, the information must be consistent. During the pandemic, many physicians and public health workers complained that multiple levels of government provided similar, but not the same advice. The differences led to skepticism, and the inundation of messages led to overload. The bottom line is that clinically relevant and trustworthy information should be provided on a timely basis, even if levels of certainty are fluctuating. Jurisdictions with effective communication to the primary care sector were characterized by cooperation and consultation between the medical community and the provincial, territorial and regional health authorities, both before and during the crisis. We recommend: 1. That the Public Health Agency of Canada, with the provinces and territories, evaluate the effectiveness of pH1N1 communications between public health and physicians and other front-line primary health care providers, and use the finding of this evaluation to research options for future response to a public health crisis. 2. That federal, provincial/territorial public health authorities and health care professionals and their associations work together in the inter-pandemic period to develop a pan-Canadian communication strategy to be used during health emergencies. 3. The establishment of a pan-Canadian centre within the Public Health Agency of Canada - similar to the Centre for Effective Practice - to undertake timely knowledge translation of clinical management guidelines for clinicians during public health crises. Surveillance and electronic communications The national response to infectious disease would have been greatly facilitated if system-wide communicable disease surveillance had been in place to support the sharing of data between public health and the rest of the health care system, particularly at the regional and local levels of pandemic response. Clinicians' practices are highly influenced by illness patterns that develop regionally and locally within their practice populations; thus, surveillance data are useful in determining appropriate treatment. Real-time data were not available to most physicians and when data did become available, they were already several weeks old. Delayed clinical guidelines were not a suitable substitute for timely surveillance information. Expansion of the use of electronic medical records (EMRs) in primary care, with bi-directional links to public health electronic health records (EHRs), could have facilitated surveillance and communications. Family practice clinics with EMRs were able to quickly identify high-risk patients, communicate with them to schedule vaccination appointments and collect the required data for public health. The varied levels of success of public pH1N1 vaccination clinics were further proof of the need to move to standard use of EMRs and EHRs in the health system. Communications can be enhanced through the sharing of data between the public health and primary care systems. EMRs may help resolve the challenge of collecting data from primary care sites. Collaboration among the PHAC, the Canadian Medical Association and the Information Technology Association of Canada's Health Division led to development of a pilot project to demonstrate the use of primary care EMRs as real-time sentinel surveillance tools for public health action to supplement existing surveillance mechanisms. In addition, after a successful two-year pilot project, the College of Family Physicians of Canada is working with the PHAC, in association with the Canadian Institute for Health Information, to conduct surveillance for five chronic diseases using EMRs, local networks across Canada and a national central repository for standardized data. These studies represent the increasingly important role of electronic information in surveillance and the value of collaboration between public health and primary care. We recommend: 4. That the federal and provincial/territorial governments provide EMR funding to enable clinical care and public health authorities to build interconnectedness and allow real-time information collection and analysis. System issues FPT responsibilities The division of responsibility between federal and provincial/territorial authorities for health care and emergency response influences how we respond to public health emergencies. Provincial/territorial governments have a primary role to play in regulating health matters within their boundaries. At the same time, the federal government has responsibilities related to national public safety and health protection. There can be no disputing the legitimacy of federal involvement in public health matters of an interprovincial/territorial nature. Under International Health Regulations, the federal government also has a responsibility to report and monitor public health emergencies of potential harm to other countries. Since Canada's SARS experience, there has been much progress in building FPT cooperation and increasing consultation on public health matters. However, the division of responsibility has led us to a situation where public health and clinical guidance in each province and territory was similar, yet different. Although the Pandemic Influenza Committee and the Special FPT Advisory Committee on H1N1 Influenza strove for consensus at the national level, individual provinces and territories were under no obligation to implement the guidance agreed to at the FPT level. Consultative and collaborative processes at the FPT level created delays in decision-making and directly interfered with the capacity of front-line professionals to respond to the urgent health needs of their patients. This led to a sense of confusion in the media and a loss of trust among the public and health professionals regarding Canada's capacity to respond to pH1N1. System capacity Canada's health system lacks surge capacity and can be sorely tested during a public health emergency, such as the recent experience with pH1N1. The underdeveloped public health infrastructure also means that it is a challenge to handle more than one national crisis at a time. To mount a response to pH1N1, public health units pulled human resources from other programs and many critical ones were delayed, suspended or cancelled altogether. During the first wave of pH1N1, Manitoba experienced a severe outbreak that stretched the resources of its critical care infrastructure to its limits. Front-line health care providers were inundated with telephone calls from the worried well and an increase in visits from those with flu symptoms. If pH1N1 had been the severe pandemic that was expected and for which Canada had been preparing, our health system would have been brought to its knees. In 2008, the Canadian Coalition for Public Health in the 21st Century noted that Canada remains vulnerable to the risks presented by epidemics and pandemics. This vulnerability remains today, and a long-range plan to build our public health capacity and workforce and to address the lack of surge capacity in our health system must become a priority if we are to be prepared for the next emergency. We recommend: 5. That the federal government increase infrastructure funding to provinces/territories to assist local health emergency preparedness planning and response, to reduce variation across the country and to integrate clinical care structures into public health structures at the local level. 6. That the Public Health Agency of Canada review the recommendations of the 2003 report of the National Advisory Committee on SARS and Public Health (Naylor report) in light of the pH1N1 experience and develop a national action plan to address the persistent gaps. Public health/primary care partnership Family physicians, in particular, understand that primary health care happens at the local level. In fact, so does all public health. During times of public health crisis, it is crucial for public health and primary care to work together, each respecting, supporting and bolstering the efforts of the other. Strengthening local public health and primary care structures and the interface between them would have resulted in improved, shared understanding of each sector's roles and responsibilities during the pH1N1 epidemic, better communications, improved data sharing and, most important, better served populations. Public health measures are directed toward the mitigation of disease through surveillance, research and outbreak management activities, while physicians provide information, education and clinical treatment to their patients. A commitment from both sectors at the local and provincial levels - and the professionals within each sector - to work together in the inter-pandemic period to build on processes that allow sharing of perspectives and information is essential. It is crucial that local public health authorities receive financial resources to increase their ability to collaborate effectively with family physicians, specialist physicians and other front-line providers. A number of the challenges faced by front-line public health workers and front-line physicians during the pH1N1 outbreak could have been lessened if there had been stronger links within the health system. We recommend: 7. That the Public Health Agency of Canada develop a focus on improving the interrelationship between primary care and public health to support collaboration during public health crises. Vaccination A key measure to combat pandemic influenza is mass vaccination. On the whole, Canada mounted an effective campaign: 45% of Canadians were vaccinated, and the proportion was even higher in First Nations communities - a first in Canadian history. Canada was one of the first countries with sufficient vaccine for the population and, with one domestic vaccine supplier, Canada avoided the confusion of multiple formulations as seen in the United States. The outcome was positive, but many public health units were stretched as expectations exceeded the pre-existing constrained resources. Although we recognize that the provinces and territories have quite different approaches to the delivery of their routine immunization programs, there is agreement that the pandemic immunization process did not adequately engage physicians in planning and delivery. A number of difficulties, such as the impact of bulk packaging, manufacturing delays that affected the agreed "sequencing" of patients and the logistics of inventory management, led to friction between front-line public health practitioners and family physicians. These could have been avoided with strengthened interdependence and mutual understanding before this crisis. The great variation in mass vaccination programs between provinces/territories, and even between local public health units, led to public confusion. Recognition of the diversity of primary care settings in which physicians work and bilateral planning in advance of the event is essential, because it is simply not feasible to tailor responses to myriad settings in the heat of the moment. Television broadcasts of long lines of people waiting to be vaccinated contributed to a loss of confidence in the system at a time when public confidence was sorely needed to encourage vaccination. Nationally promulgated clinical practice guidelines had great potential to create consistent clinical responses across the country. Instead, the variation and lack of coordination in providing important clinical information during this crisis eroded the public's confidence in the federal, provincial and territorial response. Ensuring future consistency in clinical approaches will require examination of ethical principles for the allocation of resources, such as anti-virals, vaccines and hospital treatment. Public engagement in the discussion of ethical principles is essential and, as much as possible, the consultative process should be transparent and undertaken in advance. We recommend: 8. That the Public Health Network seek advanced pan-Canadian commitment to a harmonized and singular national response to clinical practice guidelines, including mass vaccination programs, during times of potential public health crisis. Conclusion In 2003, in its submission to the National Advisory Committee on SARS, the Canadian Medical Association noted that the uptake of new information is influenced by many qualitative factors, and that research is needed to determine how best to communicate with individual physicians and other health care providers in emergency situations. Communication processes should be based on sound research and build on existing communication networks and relationships. The College of Family Physicians of Canada has recommended that information networks be strengthened to promote the sharing of the most relevant information among family physicians, other primary care providers and public health at the local level. We believe that PHAC is well positioned to undertake research on how health professionals can best receive information and to catalogue existing communication networks to build them into a well-coordinated national emergency response communication system. We must work together to translate pandemic information into practical messages relevant to front-line providers and employ trusted channels to deliver key messages to our patients and the public. Broad consensus is developing that our experience with the pH1N1 outbreak has shown that one of our greatest needs in preparing for the next public health emergency is for a national communications strategy that involves all levels of government, targets all sectors of our health system and uses the channels with which these targets are most familiar. An effective response to infectious disease outbreaks depends on effective surveillance, data collection and sharing and tracking of clinical interventions. The absence of a national communicable disease/immunization monitoring system is an ongoing problem. In 2003, the report of the National Advisory Committee on SARS and Public Health recommended that "the [Public Health] Agency [of Canada] should facilitate the long term development of a comprehensive and national public health surveillance system that will collect, analyze, and disseminate laboratory and health care facility data on infectious diseases... to relevant stakeholders." In 2010, Canada still does not have a comprehensive national surveillance and epidemiological system. A pan-Canadian electronic health information system is urgently needed and must become a priority during the inter-pandemic phase, with adequate federal funding and provincial/territorial collaboration. Greater adoption of the EMR in primary care and better public health EHRs with the ability to link systems will augment existing surveillance capacity and should be considered essential to a pan-Canadian system. Many of the challenges front-line health practitioners faced during the pH1N1 were also challenges during the SARS outbreak in 2003. The Naylor report proposed a number of measures to improve Canada's readiness and strengthen public health. Although a great deal of work and effort has gone into building links with and between provinces/territories and the federal government within the public health and the health emergency management system, little has trickled down to the front lines. This is not to devalue the much-improved spirit of FPT cooperation and the important achievements that have been made. Rather it is to suggest that, as the roof is no longer leaking, it is time to focus attention on the foundation - the response at the local level. Embedding primary care expertise in public health planning within the PHAC and at provincial/territorial and local levels will help circumvent problems and improve the effectiveness of our health system to respond to public health emergencies. A dialogue between primary care and the emergency management structures will help the response team understand and value the capabilities within primary care and build them into their planning and response systems. At the end of the day, we need to nurture collaborative relations between public health and primary care. Our shared objective is protecting the health of Canadians, recognizing that, in reality, neither system can be successful in isolation. It is essential that we trust each other's professionalism and expertise and work together to ensure that a strong foundation is in place to protect Canadians from future health threats. We have the will and expertise. We need the resources and a firm commitment to move forward. We have had two "wake-up calls" - SARS and pH1N1. Let's not wait for a third to find that we are not yet prepared. Recommendations 1. That the Public Health Agency of Canada, with the provinces and territories, evaluate the effectiveness of pH1N1 communications between public health and physicians and other front-line primary health care providers, and use the finding of this evaluation to research options for future response to a public health crisis. 2. That federal, provincial/territorial public health authorities and health care professionals and their associations work together in the inter-pandemic period to develop a pan-Canadian communication strategy to be used during health emergencies. 3. The establishment of a pan-Canadian centre within the Public Health Agency of Canada - similar to the Centre for Effective Practice - to undertake timely knowledge translation of clinical management guidelines for clinicians during public health crises. 4. That the federal and provincial/territorial governments provide EMR funding to enable clinical care and public health authorities to build interconnectedness and allow real-time information collection and analysis. 5. That the federal government increase infrastructure funding to provinces/territories to assist local health emergency preparedness planning and response, to reduce variation across the country and to integrate clinical care structures into public health structures at the local level. 6. That the Public Health Agency of Canada review the recommendations of the 2003 report of the National Advisory Committee on SARS and Public Health (Naylor report) in light of the pH1N1 experience and develop a national action plan to address the persistent gaps. 7. That the Public Health Agency of Canada develop a focus on improving the interrelationship between primary care and public health to support collaboration during public health crises. 8. That the Public Health Network seek advanced pan-Canadian commitment to a harmonized and singular national response to clinical practice guidelines, including mass vaccination programs, during times of potential public health crisis.
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Healthy behaviours - promoting physical activity and healthy eating

https://policybase.cma.ca/en/permalink/policy11523
Date
2015-05-30
Topics
Population health/ health equity/ public health
  1 document  
Policy Type
Policy document
Date
2015-05-30
Replaces
Promoting Physical Activity and Healthy Weights
Topics
Population health/ health equity/ public health
Text
The Canadian Medical Association (CMA) supports the promotion of healthy lifestyles in order to improve individual health and well-being and the overall health status of the population. Healthy lifestyles refer to patterns of individual practices and personal behavioural choices that are associated with optimal health. Two of the most important behaviours to create or maintain optimum health are healthy eating and physical activity. For many Canadians, their diet and physical activity levels can have a negative rather than positive impact on their overall health. There is a particular concern for children and youth who are growing up in increasingly obesogenic environments that reinforce practices that work against a healthy lifestyle.1 Childhood obesity research tells us that overweight and obese children are more likely to stay the same into adulthood.2 To reverse this trend, determined action is required for children and youth to learn and acquire healthy behaviours that they will maintain throughout their life. Healthy lifestyles are central to successful aging and improving the likelihood of recovery after poor health.3 This policy paper discusses the importance of physical activity and healthy eating, and the role that individuals and families, schools, workplaces, communities, the food industry and all levels of governments can play in promoting healthy lifestyles. We know that collaborative action is required to make it easier for Canadians to incorporate healthy eating and physical activity into their daily lives - to make the healthy choice the easy choice. What are the health impacts of unhealthy diets and physical inactivity Diet is the leading risk factor for death, disability and life-years lost; being estimated to cause over 65,000 deaths and 864,000 life years lost in Canada in 2010.4 Unhealthy diet has been consistently linked with cardiovascular diseases (heart disease, stroke, hypertension, diabetes, dyslipidemia) and some cancers,5 which constitutes the majority of the disease burden in Canada. An estimated 80% of hypertension, which affects over 7 million Canadians, is directly or indirectly attributed to unhealthy diet.6 An estimated 60% of Canadian adults and close to one-third of children are overweight or obese, largely caused by unhealthy diets.7 Overweight and obesity (and the lifestyle choices associated with them) are contributors to more than 18 chronic conditions.8 This includes diabetes, cardiovascular disease, hypertension and liver disease, as well as breast, colon and prostate cancer. Obesity is a public health issue not unique to Canada as the rates are increasing worldwide. Obesity is generally attributed to the fact that, as a society, we are increasing our calorie intake while at the same time burning less energy in physical activity. While it is difficult to determine how many deaths are directly attributable to obesity, we know that obesity often co-exists with other risk factors such as the lack of physical activity. Exercise is one of the top modifiable risk factor for chronic disease.9 Regular physical activity is associated with a reduced risk of cardiovascular disease, some types of cancer, diabetes, obesity, hypertension, bone and joint diseases, and depression.10 The risk for many of these conditions is reduced by 20 - 40% in adults with the highest levels of physical activity compared to those with the lowest levels of physical activity. Recent research has shown that a sedentary lifestyle is associated with higher risk for chronic conditions such as obesity, diabetes and cancer independent of physical activity levels.11 According to the most recent Canadian Health Measures Study physical activity levels for children and youth are low with 6 out of 10 waking hours devoted to sedentary pursuits. Obesity is rising and physical fitness is declining.12 Canadians who do not achieve adequate levels of physical activity or eat unhealthy foods are vulnerable to preventable chronic diseases, premature death, and contribute to high health care costs. For instance, in 1999, $2.1 billion or 2.5% of the total direct health care costs were attributable to physical inactivity.13 To understand why the rates of obesity and overweight are rising, it may be helpful to look at what we already know about healthy eating and physical activity. What we know about healthy eating While modern science has allowed us to expand our knowledge of the impact of nutrients and food on human health we continue to be beset with illness and disease caused by the foods we consume. Having the right amount and type of food recommended in Canada's Food Guide is a first step towards healthy eating. But Canadians self-reported dietary intakes do not meet national dietary recommendations despite high reliance on public education concerning healthy eating and healthy diets. Children and adults are under-consuming the recommended servings of vegetables and fruits, an established proxy for healthy eating habits, and exceeding daily recommended intakes of sodium.14,15 As the links between nutrition and disease, and the impact on the health of our society are revealed it is more important than ever to understand what influences healthy eating behaviours. Food choices are structured by a variety of individual determinants of behaviour, ranging from one's physiological state, food preferences, nutritional knowledge, perceptions of healthy eating and psychological factors. Many processed foods have become popular due to their accessibility and 'convenience factor', but these features have changed the way food and in particular these products are consumed compared to unprocessed foods: increased 'grazing', eating alone or eating while carrying out other activities such as work or driving. In addition, many calories consumed come in liquid form.16 Growth in the production and consumption of ultra-processed foods has increased drastically in the last decades in both higher and lower-income countries.17 A number of studies have shown that because less healthy foods are cheaper than healthier food, individuals from lower socioeconomic classes tend to be more dependent on unhealthy foods for nourishment.18 Other determinants for healthy eating include a wide range of contextual factors, such as the interpersonal environment created by family and peers, the physical environment, which determines food availability and accessibility, the economic environment, in which food is a commodity to be marketed for profit, and the social environment. Within the social environment, social status (income, education and gender) and cultural milieu are determinants of healthy eating that may be working "invisibly" to structure food choice.19 What we know about physical activity Canada's Physical Activity Guidelines recommend that children and youth aged 5 to 17 get at least 60 minutes of moderate-to-vigorous physical activity (MVPA) per day; and adults get 150 minutes of physical activity per week.20 In fact, about 94% of Canadian children and youth do not meet minimum physical activity guidelines.21 Furthermore, about 85% of Canadian adults do not meet the minimum guidelines. Physical activity includes but is not limited to sports and recreation. Using active transportation to get to work as well as being active at work is an alternative form of MVPA and can also lead to improved health. For most Canadians, the average day is spent on passive activities such as TV viewing, computer and game-console use, workplace sitting, and time spent in automobiles. Moreover, the sprawling suburban communities, in which many live, do not encourage physical activity. Emerging research suggests that prolonged sitting time is associated with an increased health risk.22 These findings mean that one can meet the minimum physical activity guidelines and still not engage in a healthy lifestyle. Spending a few hours a week at the gym or otherwise engaged in moderate or vigorous activity doesn't seem to significantly offset the risk. Hence too much sitting is a risk distinct from too little exercise. While further research is required to identify which methods of exercise promotions work best for individuals,23 it is clear that supportive environments and infrastructures are essential for Canadians to make physical activity part of their daily lives. CMA's policies about the Built Environment and Active Transportation support the role of the environment on our physical activity patterns. How we can promote physical activity and healthy eating A sedentary lifestyle is a cue for physician advice.24 Physical activity is a vital sign that may require as much attention as other traditional vital signs25 - weight, blood pressure, or smoking history. Physicians are eager to initiate these conversations, especially with patients living with chronic diseases. A message must be repeated many times in order to effect a change in lifestyle. Physicians can reiterate the medical importance of physical activity and healthy eating by reinforcing this message during each office visit, and writing the recommendation on a prescription pad.26 For instance, in British Columbia, physicians are prescribing exercise on specially-designed pads, distributing free pedometers, and hosting free walking events for their patients and the public. In the Edmonton area, Primary Care Networks are prescribing free access passes or a free month of access at local municipal recreation facilities. And in Nova Scotia, physicians have been running a free provincial running program for over 10 years that benefits thousands of kids in elementary school. Nonetheless these clinical interventions alone cannot shape healthier food consumption patterns and lifestyle choices. An obvious starting point to develop a comprehensive policy is to understand the interplay between individual and environmental determinants that influence our behaviours. In this regard, CMA has developed policies on Active Transportation and the Built Environment and Health which recognize the role of neighborhood design and alternative modes for transportation for an active lifestyle. This approach is also at the heart of the Integrated Pan-Canadian Healthy Living Strategy (PCHLS)27, approved in 2005 by all levels of government. CMA commends the efforts put in the PCHLS to prioritize healthy eating and physical activity. What we recommend CMA looks forward to working with others in making options for physical activity and healthy eating more available and accessible to all Canadians. The following recommendations highlight the potential contributions of the following sectors: health professionals, all levels of government, communities, workplaces, schools, the food industry and individuals and families. Health Professionals CMA encourages physicians to promote healthy eating and physical activity inside and outside their office. Physicians are lifestyle change agents and remain the preferred source of information about health for many people. Physicians, who are committed to physical activity, are role models whose advice on healthy living is more likely to be adopted.28 CMA encourages physicians to address any work-imposed limitations - such as the lack of time, motivation, or tiredness - that could also influence their own exercise and eating habits. In clinical practice, physicians can help patients start or maintain a healthy lifestyle by: * assessing nutrition and physical activity as part of routine assessments; * determining the factors that influence individual patient's nutrition and physical activity levels; * assessing patient's readiness to change and tailoring interventions and support to their current situation; * providing an exercise prescription to encourage physical activity to maintain or improve health status, and * working in inter-professional teams to provide patient education with other health care providers such as dieticians. Medical students and residents, while reporting a high level of importance for exercise prescription concede a low level of expertise in this area upon graduation.29,30,31 As knowledge develops, physicians and other health professionals should be kept updated and encouraged to incorporate the most effective interventions into their practices. The CMA encourages the development of continuing medical education courses on issues related to physical activity and healthy eating. Within the healthy living approach, there are multiple opportunities to extend the role of physicians into the community as observed in Nova Scotia, British Columbia and Edmonton area. Physicians can establish strong community norms for a healthy lifestyle by: * establishing and reinforcing healthy food policies in hospital cafeterias or at health-related meetings and conferences * using, facilitating and advocating for the use of active transportation in their communities * working within the community to ensure that recreation centres and other facilities are available and patients can be referred to the services most appropriate to their needs Federal, Provincial, and Territorial Governments CMA calls on federal, provincial, territorial and municipal governments to commit to a long-term, well-funded Canada-wide strategy for healthy living beyond 2015. In 2005, Canada's federal, provincial, and territorial governments endorsed a 10-year Healthy Living Strategy Framework, whose initial priorities included the promotion of healthy eating and physical activity. The national strategy addressed information and support for Canadians to help them make healthy choices; support for physicians and other health professionals in counselling patients on healthy weight and in treating existing obesity; community infrastructures that make healthy living easier; and public policies that encourage healthy eating and physical activity. The federal and provincial / territorial governments have undertaken a number of activities in the intervening years to promote physical activity and healthy eating but much remains to be done. CMA believes that all levels of governments have a continuous obligation to provide public guidance on healthy eating and to promulgate policies, standards, regulations and legislations that support the availability and accessibility of healthy and affordable food and beverage choices. CMA calls on governments to improve access to nutritious food at affordable prices for all Canadians. The price of milk, fresh produce and other healthy foods can vary greatly across Canada. In many remote areas, they are often more expensive than processed, nutrition-poor foods because of high transportation costs. Governments should implement effective programs to offset the impact of transportation costs on food prices in northern and remote communities. Even in urban areas, nutritious food may be unaffordable for people on low incomes. School meal programs, social assistance rates that take into account the cost of purchasing healthy food, access to urban farmers' markets can help to ensure that all Canadians have access to healthy foods at a reasonable price. CMA calls on governments to ban marketing of foods and beverages high in salt, sugars and trans fats to those 13 years of age and younger. The typical Canadian child may be exposed to as many as 40,000 advertisements for food a year.32 This does not include point-of-sale promotions, such as displays of candy bars at convenience-store counters. CMA's policy on marketing of unhealthy foods and beverages to children and youth calls for a ban on marketing of foods and beverages high in salt, sugars and trans fats to those 13 years of age and younger. CMA calls on governments to set rigorous standards for front of package food labeling and for the advertising of health claims for food. Brand-specific advertising is a less than optimal way to provide health information to consumers, who should be encouraged to seek out objective information sources for answers to their questions about physical activity and healthy eating. To improve the quality of information received through commercial channels, the CMA recommends that health claims made for foods be strictly regulated to ensure that they are based on the best available scientific evidence and that they are accurately communicated to consumers. Food advertisements should be pre-cleared before airing in the media, and the provisions against deceptive advertising in the Food and Drug Act should be strengthened. CMA recommends that governments at all levels invest in evidence-based research on healthy eating and physical activity and share the results of this research with all Canadians. CMA encourages all levels of governments to continue to fund and support research for healthy lifestyles. There is a clear need to invest in research to strengthen the evidence base about physical activity and healthy eating, particularly on:
best measures for assessing overweight and obesity;
the effectiveness of weight management and treatment programs; and
the effect of policy interventions on healthy eating and physical activity on rates of obesity and obesity-related disease. Food Industry CMA encourages governments to continue to work with the food industry to improve the food environment in Canada. The partnership and collaboration of food manufacturers is needed to help Canadians make healthier food choices. The food industry can work with governments to:
reduce the salt, sugar, saturated fat, trans fat and calorie content of processed foods and pre-prepared meals;
provide information about the calorie and nutrition content on restaurant menus;
restrict advertising and in-store promotion of high-sugar, high-salt, high-fat foods, particularly those aimed at children;
provide user-friendly consumer information about their products, including and accurate health and advertising claims;
improve the nutrition fact table to make it more user friendly and increase the amount of information for example, by identifying the amount of free sugars. Communities CMA calls on municipal governments to create environments that encourage healthy and active living and on federal, provincial and territorial governments to support them in this endeavour. Communities have an important role to play to promote healthy behaviours for children, youth, and adults. They shape how many Canadians decide to live, work and play in their daily life. Through mixed-use land planning and building design, communities can create walking-friendly environments, and reduce the time people spend in cars. To achieve this, communities should consider:
developing and maintaining a community-wide network of walking and cycling paths;
zoning communities in such a way that amenities are within walking distance of homes; and
revising building codes to make stairs accessible, pleasant and safe, so that people have an alternative to taking the elevator. Canadians are considerably more physically active in the summer than in the winter and this could have an impact on obesity trends.33 Communities could improve pathways to healthy lifestyles year-round by improving access to indoor sport and recreation facilities, especially during winter. Where possible, communities should consider partnering with schools to share the use of gymnasiums, playgrounds, fields, courts, and tracks with the public after school hours and on weekends. In doing so, communities are ensuring the best use of time and resources, but also sharing liability for the development, operation, and maintenance of the facilities. Community food security can happen if local residents have equal access to safe, affordable and nutritious food. Communities have a role to play in advocating for healthier food options in schools and workplaces, encouraging community kitchens to teach cooking skills, and supporting local agriculture and farmers markets. This, in turn, would encourage individuals to eat more healthy foods. Workplaces CMA encourages employers to actively promote the health of their employees by providing opportunities for physical activity, and healthy food choices in cafeterias. Prolonged, unbroken time spent sitting in front of a screen is very common in the workplace. In addition, four out of five commuters sit daily in their private vehicles to go to work.34 As Canadians spend most of their adult life at work, it is important to reduce workplace sitting. CMA encourages employers, especially in sedentary occupational groups, to increase opportunities for physical activity. For example, employers can promote healthy behaviours by:
Building on-site fitness facilities or entering into agreements with off-site fitness centres to provide programs for their employees
Providing showers, bike racks and other amenities for employees for those who want to commute to work on foot or by bike. Healthier food options in cafeteria and vending machines can promote and encourage healthy eating by employees. Schools Schools, where children spend most of their time outside of home, present an excellent opportunity to instil healthy behaviours at an early age. They could, for example, provide comprehensive nutrition education, serve nutritious food in their cafeterias and promote physical activity by providing formal instruction and informal recreation time. Schools can provide the most effective and efficient way to reach not only the children themselves, but their parents, teachers, and other community members.35 CMA encourages school boards to provide at least 60 minutes of active daily physical education for all primary and secondary grades. Only 26% of Canadian schools reported that they had implemented daily physical education classes for their students.36 There is some evidence that school-based physical activity can increase physical activity levels and reduce time spent watching television at home. 37 For instance, schools can promote physical activity through unstructured out-of-home play, structured sports, or active transportation (e.g. walking to school). Children who are physically active and spend less time watching television after school are less likely to become overweight before age 12.38 CMA recommends that schools provide access to attractive, affordable, healthy food choices, provide nutrition education, and initiate programs aimed at encouraging healthy food consumption and skills to prepare meals from scratch. CMA calls for restrictions on the sale of high-calorie, high fats, sugars or salts foods/drinks in recreational facilities frequented by young people. Fast food restaurants and convenience stores can be an important influence on children's eating habits and food choices.39 Children attending schools within a short distance of fast food restaurants eat fewer fruits and vegetable servings, and drink more soft drinks than others who did not have similar establishments within proximity.40 To encourage effective school-based nutrition interventions, it is therefore important to educate students about the nutrition value of foods, healthy food choices, and provide healthy canteens or cafeterias. Individuals and families CMA recommends that all Canadians work toward achieving and maintaining health by:
educating themselves about their dietary needs and about the caloric and nutrition content of foods; and
engaging in physical activity, with the goal of at least 60 minutes of moderate activity per day for children and youth, and 150 minutes per week for adults. Ultimately, healthy eating and physical activity require that individuals take action to make healthy choices in their lives. To inform these choices, Canadians should be supported with appropriate resource materials with consistent information about healthy eating and physical activity. For instance, many young children do not choose what they consume; their parents buy and prepare the food for them. Research suggests that mothers and children appear to have divergent attitudes towards food and mealtimes.41 In this regard, it is important for parents to be well-informed and able to explain the tangible benefits of foods and their nutritional components to their children before they reach adulthood. What we conclude Healthy behaviours are easier to maintain through life if acquired in childhood and encouraged by the family. Therefore Canadian families should be supported in efforts to ensure that both children and adults eat nutritiously and exercise daily. We believe there is a role for everyone in promoting healthy behaviours - including health professionals, individuals, families, schools, workplaces, communities, the food industry and all levels of governments. Popular approaches seek to provide individuals with information and options about healthy lifestyles choices. However, individual choice is not sufficient to ensure healthy behaviours. Many barriers to the adoption of healthy behaviours and lifestyle choices can be met through a targeted population health approach, and evidence-based policy and regulatory controls. A comprehensive change in culture and mindset, political endorsement and multifaceted strategies are needed to promote and facilitate change to improve the dietary practices and physical activity levels of Canadians. Summary of Recommendations 1. The Canadian Medical Association encourages physicians to promote healthy eating and physical activity inside and outside their office. 2. The Canadian Medical Association calls on federal, provincial, territorial and municipal governments to commit to a long-term, well-funded Canada-wide strategy for healthy living beyond 2015. 3. The Canadian Medical Association calls on governments to improve access to nutritious food at affordable prices for all Canadians. 4. The Canadian Medical Association calls on governments to ban marketing of foods and beverages high in salt, sugars and trans fats to those 13 years of age and younger. 5. The Canadian Medical Association calls on governments to set rigorous standards for front of package food labeling and for the advertising of health claims for food. 6. The Canadian Medical Association recommends that governments at all levels invest in evidence-based research on healthy eating and physical activity and share the results of this research with all Canadians. 7. The Canadian Medical Association encourages governments to continue to work with the food industry to improve the food environment in Canada. 8. The Canadian Medical Association calls on municipal governments to create environments that encourage healthy and active living and on federal, provincial and territorial governments to support them in this endeavour. 9. The Canadian Medical Association encourages employers to actively promote the health of their employees by providing opportunities for physical activity, and healthy food choices in cafeterias. 10. The Canadian Medical Association encourages school boards to provide at least 60 minutes of active daily physical education for all primary and secondary grades. 11. The Canadian Medical Association recommends that schools provide access to attractive, affordable, healthy food choices, provide nutrition education, and initiate programs aimed at encouraging healthy food consumption and skills to prepare meals from scratch. 12. The Canadian Medical Association calls for restrictions on the sale of high-calorie, high fats, sugars or salts foods/drinks in recreational facilities frequented by young people. 13. The Canadian Medical Association recommends that all Canadians work toward achieving and maintaining health by: * educating themselves about their dietary needs and about the caloric and nutrition content of foods; and * engaging in physical activity, with the goal of at least 60 minutes of moderate activity per day for children and youth, and 150 minutes per week for adults. References 1 Swinburn B, Egger G. The runaway weight gain train: too many accelerators, not enough brakes. BMJ. 2007;329:736-9. 2 Waters E, de Silva-Sanigorski A, Hall BJ, et al. Interventions for preventing obesity in children. Cochrane Database Syst Rev. 2011;(12): CD001871. 3 Shields M, Martel L. (2006). Healthy living among seniors. Ottawa: Statistics Canada; 2005. Available: www5.statcan.gc.ca/bsolc/olc-cel/olc-cel?catno=82-003-S20050009086&lang=eng (accessed 2014 Jan 20). 4 Institute for Health Metrics and Evaluation. Global burden of disease arrow diagram. Seattle (WA): The Institute; 2013. Available: www.healthmetricsandevaluation.org/gbd/visualizations/gbd-arrow-diagram (accessed 2010 Mar 15) 5Committee on Public Health Priorities to Reduce and Control Hypertension in the U.S. Population, Institute of Medicine of the National Academies. A population-based policy and systems change approach to prevent and control hypertension. Report, v-173. Washington (DC): National Academies Press; 2010. 6 Beaglehole R, Bonita R, Horton R, et al. 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Health Rep. 2011 Mar;22(1). 11 Statistics Canada. Directly measured physical activity of Canadian adults, 2007-2011. Health fact sheets. Ottawa: Statistics Canada; 2013. 12 Colley R, Garriguet D, Janssen I, et al. Physical activity of Canadian children and youth: accelerometer results from the 2007 to 2009 Canadian Health Measures Study. Statistics Canada Cat. No. 82-003 XPE. Health Rep. 2011 Mar;22(1). 13 Katzmarzyk PT, Gledhill N, Shephard RJ. The economic burden of physical inactivity in Canada CMAJ. 2000;163(11):1435-40. 14 Statistics Canada. Fruit and vegetable consumption. Health fact sheets. Statistics Canada Cat. No. 82-625-XWE. Ottawa: Statistics Canada; 2012. Available: www.statcan.gc.ca/pub/82-625-x/2013001/article/11837-eng.htm (accessed 2013 Nov 8). 15 Garriguet D. Canadians' eating habits. Statistics Canada Cat. No. 82-003. Health Rep. 2007;18(2):17-32. Available: www.statcan.gc.ca/pub/82-003-x/2006004/article/habit/9609-eng.pdf (accessed 2013 Jul 10). 16 Monteiro CA. 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Canadian health measures survey: directly measured physical activity of Canadians, 2007 to 2011. The Daily. Ottawa: Statistics Canada; 2013 May 30. Available: www.statcan.gc.ca/daily-quotidien/130530/dq130530d-eng.pdf (accessed 2014 Jan 20). 22 Owen N, Healy GN, Matthews CE, et al. Too much sitting: the population health science of sedentary behavior. Exerc Sport Sci Rev. 2010;38(3):105-13. 23 Foster C, Hillsdon M, Thorogood M, Kaur A, Wedatilake T. Interventions for promoting physical activity. Cochrane Database Syst Rev. 2013 (1). Review. 24 Glasgow RE, Eakin EG, Fisher EB, et al. Physician advice and support for physical activity results from a national survey. Am J Prev Med. 2001;21(3):189-96. 25 Salis R. Developing healthcare systems to support exercise: exercise as the fifth vital signs. Br J Sports Med. 2011;45(6):473-4. 26 Andersen RE, Blair SN, Cheskin LJ, et al. Encouraging patients to become more physically active: the physician's role. Ann Intern Med. 1997;127(5):395-400. 27 Public Health Agency of Canada. Overview of the Pan-Canadian Healthy Living Strategy. 2010. Available: www.phac-aspc.gc.ca/hp-ps/hl-mvs/ipchls-spimmvs-eng.php (accessed 2014 Jan 20). 28 Lobelo F, Duperly J, Frank E. Physical activity habits of doctors and medical students influence their counselling practices. Br J Sports Med. 2009;43(2):89-92. 29 Rogers LQ, Gutin B, Humphries MC, et al. Evaluation of internal medicine residents as exercise role models and associations with self-reported counseling behavior, confidence, and perceived Success. Teach Learn Med. 2006;18(3):215-21. 30 Connaughton AV, Weiler RM, Connaughton DP. (May-June 2001). Graduating medical students' exercise prescription competence as perceived by deans and directors of medical education in the United States: implications for Healthy People 2010. Public Health Rep. 2001;116:226-34. 31 Vallance JK, Wylie M, MacDonald R. Medical students' self-perceived competence and prescription of patient-centered physical activity. Prev Med. 2009;48(2):164-6. DOI: 10.1016/j.ypmed.2008.12.006 32 The Kaiser Family Foundation. The role of media in childhood obesity. Menlo Park (CA): The Foundation; 2004 Feb. Available: http://kaiserfamilyfoundation.files.wordpress.com/2013/01/the-role-of-media-in-childhood-obesity.pdf (accessed 2014 Mar 19). 33 Merchant AT, Dehghan M, Akhtar-Danesh N. Seasonal variation in leisure-time physical activity among Canadians Can J Public Health. 2007;98(3):203-8. 34 Statistics Canada. Commuting to work. National Household Survey. 2011. Available: https://www12.statcan.gc.ca/nhs-enm/2011/as-sa/99-012-x/99-012-x2011003_1-eng.cfm (accessed 2014 Jan 20). 35 Perez-Rodrigo C. School-based nutrition education: lessons learned and new perspectives. Public Health Nutr. 2001;4(1A):131-9. 36 Canadian Fitness and Lifestyle Research Institute. Policies related to physical activities. 2011 opportunities for physical activity at school survey. 2012 Aug 14. Available: http://www.cflri.ca/sites/default/files/node/1054/files/Schools%202011%20Bulletin%2012%20-%20Policy%20EN.pdf (accessed 2013 Sep 15). 37 Dobbins M, Husson H, DeCorby K, et al. School-based physical activity programs for promoting physical activity and fitness in children and adolescents aged 6 to 18. Cochrane Database Syst Rev. 2013;2:CD007651. 38 O'Brien M, Nader PR, Houts RM, et al. The ecology of childhood overweight: a 12-year longitudinal analysis. Int J Obes (Lond). 2007;31(9):1469-78. 39 Howard PH, Fitzpatrick M, Fulfrost B Proximity of food retailers to schools and rates of overweight ninth grade students: an ecological study in California. BMC Public Health. 2011;11(68). 40 Davis B, Carpenter C. Proximity of fast-food restaurants to schools and adolescent obesity. Am J Public Health. 2009;99(3):505-10. 41 Le Bigot Macaux A. Eat to live or live to eat? Do parents and children agree? Public Health Nutr. 2001;4(1A):141-6.
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