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Because we care about our patients, we need to get involved in the climate change movement. If we want to help prevent cancer and deliver the best possible care to our patients, we need to stop burning fossil fuels. As addressed in an earlier version of this column, burning fossil fuels results in the release of particulate matter and particles measuring 2.5 micrometers in diameter (PM2.5), are classified as group 1 carcinogens by the International Association of Research and Cancer.

Fossil fuels also release greenhouse gases (carbon dioxide, methane, nitrous oxide, and fluorinated gases) which trap solar radiation that would otherwise have been reflected back into space after hitting the earth’s surface. Instead, it is redirected back to earth as infrared radiation warming the planet by 1.1° C since preindustrial times.

Dr. Joan H. Schiller
Dr. Joan H. Schiller


Climate change has a number of consequences, including more extreme weather events, rising sea levels, warming seas, environmental degradation, and affects water and food quality, supply, and production. A global increase of 1.5° C above the preindustrial average risks catastrophic harm to health that will be impossible to reverse, prompting the editors of over 260 health journals to call for emergency action to limit global temperature increases, restore biodiversity, and protect health.

In October, the 2022 version of the Lancet Countdown on health and climate change was issued and the findings are not good. “After 30 years of UNFCCC negotiations, the Lancet Countdown indicators show that countries and companies continue to make choices that threaten the health and survival of people in every part of the world. As countries devise ways to recover from the coexisting crises, the evidence is unequivocal. At this critical juncture, an immediate, health-centered response can still secure a future in which world populations can not only survive, but thrive,” the authors wrote. Governments and companies continue to prioritize fossil fuels over people’s health.

Among the key findings from the report, Marina Romanello, PhD, of the Institute for Global Health at University College London, and her colleagues, call for “A health-centered response to the coexisting climate, energy, and cost-of-living crises provides an opportunity to deliver a healthy, low-carbon future. The associated reduction in the burden of disease will in turn reduce the strain on overwhelmed health care providers, and enable better care.”

The authors also state that “Well-prepared health systems are essential to protect populations from the health impacts of climate change. However, global health systems have been drastically weakened by the effects of the COVID-19 pandemic, and the funds available for climate action decreased in 239 (30%) of 798 cities, with health systems increasingly being affected by extreme weather events and supply chain disruptions.”

And, the authors are concerned that health systems have left themselves vulnerable to climate change–related health hazards because they have not adapted their operations for climate-related changes. “Only 48 of 95 countries have assessed their climate change adaptation needs and only 63% of countries reported high to very high implementation status for health emergency management in 2021. Increasing adaptation to climate change has the potential to simultaneously improve the capacity of health systems to manage both future infectious disease outbreaks and other health emergencies.”

There is roughly a 50% chance that the 1.5° C threshold proposed in the Paris Agreement will be exceeded within 5 years. The carbon intensity of the global energy system has been reduced by less than 1% from 1992 levels, when the United Nations Framework Convention on Climate Change was adopted. At our current pace, global emissions could be 13.7% above 2010 levels by 2030 and fully decarbonizing the energy system would take 150 years. Clearly, we are nowhere near meeting the goals of the Paris Agreement signed in 2015 by 192 countries and the European Union. Participants pledged to decrease their carbon footprint by 50% by 2030, and net zero by the end of the century.

The effect of increasing greenhouse gases in our atmosphere will have a massive impact on the prevention and care of cancer patients. Air pollution is responsible for about 14% of lung cancer deaths throughout the world. Rising temperatures lead to extreme weather events which disrupts infrastructure and the ability to access health care, leading to delays in treatment, increased morbidity, and death. Screening rates for cancer go down, which leads to more patients presenting with advanced cancer in the future.

As oncologists who care deeply about their patients, we need to get actively involved. It is our responsibility to our current and future patients to do whatever we can to prevent cancer and reduce its complications.

Dr. Schiller is a medical oncologist and founding member of Oncologists United for Climate and Health. She is a former board member of the International Association for the Study of Lung Cancer and a current board member of the Lung Cancer Research Foundation.

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Because we care about our patients, we need to get involved in the climate change movement. If we want to help prevent cancer and deliver the best possible care to our patients, we need to stop burning fossil fuels. As addressed in an earlier version of this column, burning fossil fuels results in the release of particulate matter and particles measuring 2.5 micrometers in diameter (PM2.5), are classified as group 1 carcinogens by the International Association of Research and Cancer.

Fossil fuels also release greenhouse gases (carbon dioxide, methane, nitrous oxide, and fluorinated gases) which trap solar radiation that would otherwise have been reflected back into space after hitting the earth’s surface. Instead, it is redirected back to earth as infrared radiation warming the planet by 1.1° C since preindustrial times.

Dr. Joan H. Schiller
Dr. Joan H. Schiller


Climate change has a number of consequences, including more extreme weather events, rising sea levels, warming seas, environmental degradation, and affects water and food quality, supply, and production. A global increase of 1.5° C above the preindustrial average risks catastrophic harm to health that will be impossible to reverse, prompting the editors of over 260 health journals to call for emergency action to limit global temperature increases, restore biodiversity, and protect health.

In October, the 2022 version of the Lancet Countdown on health and climate change was issued and the findings are not good. “After 30 years of UNFCCC negotiations, the Lancet Countdown indicators show that countries and companies continue to make choices that threaten the health and survival of people in every part of the world. As countries devise ways to recover from the coexisting crises, the evidence is unequivocal. At this critical juncture, an immediate, health-centered response can still secure a future in which world populations can not only survive, but thrive,” the authors wrote. Governments and companies continue to prioritize fossil fuels over people’s health.

Among the key findings from the report, Marina Romanello, PhD, of the Institute for Global Health at University College London, and her colleagues, call for “A health-centered response to the coexisting climate, energy, and cost-of-living crises provides an opportunity to deliver a healthy, low-carbon future. The associated reduction in the burden of disease will in turn reduce the strain on overwhelmed health care providers, and enable better care.”

The authors also state that “Well-prepared health systems are essential to protect populations from the health impacts of climate change. However, global health systems have been drastically weakened by the effects of the COVID-19 pandemic, and the funds available for climate action decreased in 239 (30%) of 798 cities, with health systems increasingly being affected by extreme weather events and supply chain disruptions.”

And, the authors are concerned that health systems have left themselves vulnerable to climate change–related health hazards because they have not adapted their operations for climate-related changes. “Only 48 of 95 countries have assessed their climate change adaptation needs and only 63% of countries reported high to very high implementation status for health emergency management in 2021. Increasing adaptation to climate change has the potential to simultaneously improve the capacity of health systems to manage both future infectious disease outbreaks and other health emergencies.”

There is roughly a 50% chance that the 1.5° C threshold proposed in the Paris Agreement will be exceeded within 5 years. The carbon intensity of the global energy system has been reduced by less than 1% from 1992 levels, when the United Nations Framework Convention on Climate Change was adopted. At our current pace, global emissions could be 13.7% above 2010 levels by 2030 and fully decarbonizing the energy system would take 150 years. Clearly, we are nowhere near meeting the goals of the Paris Agreement signed in 2015 by 192 countries and the European Union. Participants pledged to decrease their carbon footprint by 50% by 2030, and net zero by the end of the century.

The effect of increasing greenhouse gases in our atmosphere will have a massive impact on the prevention and care of cancer patients. Air pollution is responsible for about 14% of lung cancer deaths throughout the world. Rising temperatures lead to extreme weather events which disrupts infrastructure and the ability to access health care, leading to delays in treatment, increased morbidity, and death. Screening rates for cancer go down, which leads to more patients presenting with advanced cancer in the future.

As oncologists who care deeply about their patients, we need to get actively involved. It is our responsibility to our current and future patients to do whatever we can to prevent cancer and reduce its complications.

Dr. Schiller is a medical oncologist and founding member of Oncologists United for Climate and Health. She is a former board member of the International Association for the Study of Lung Cancer and a current board member of the Lung Cancer Research Foundation.

Because we care about our patients, we need to get involved in the climate change movement. If we want to help prevent cancer and deliver the best possible care to our patients, we need to stop burning fossil fuels. As addressed in an earlier version of this column, burning fossil fuels results in the release of particulate matter and particles measuring 2.5 micrometers in diameter (PM2.5), are classified as group 1 carcinogens by the International Association of Research and Cancer.

Fossil fuels also release greenhouse gases (carbon dioxide, methane, nitrous oxide, and fluorinated gases) which trap solar radiation that would otherwise have been reflected back into space after hitting the earth’s surface. Instead, it is redirected back to earth as infrared radiation warming the planet by 1.1° C since preindustrial times.

Dr. Joan H. Schiller
Dr. Joan H. Schiller


Climate change has a number of consequences, including more extreme weather events, rising sea levels, warming seas, environmental degradation, and affects water and food quality, supply, and production. A global increase of 1.5° C above the preindustrial average risks catastrophic harm to health that will be impossible to reverse, prompting the editors of over 260 health journals to call for emergency action to limit global temperature increases, restore biodiversity, and protect health.

In October, the 2022 version of the Lancet Countdown on health and climate change was issued and the findings are not good. “After 30 years of UNFCCC negotiations, the Lancet Countdown indicators show that countries and companies continue to make choices that threaten the health and survival of people in every part of the world. As countries devise ways to recover from the coexisting crises, the evidence is unequivocal. At this critical juncture, an immediate, health-centered response can still secure a future in which world populations can not only survive, but thrive,” the authors wrote. Governments and companies continue to prioritize fossil fuels over people’s health.

Among the key findings from the report, Marina Romanello, PhD, of the Institute for Global Health at University College London, and her colleagues, call for “A health-centered response to the coexisting climate, energy, and cost-of-living crises provides an opportunity to deliver a healthy, low-carbon future. The associated reduction in the burden of disease will in turn reduce the strain on overwhelmed health care providers, and enable better care.”

The authors also state that “Well-prepared health systems are essential to protect populations from the health impacts of climate change. However, global health systems have been drastically weakened by the effects of the COVID-19 pandemic, and the funds available for climate action decreased in 239 (30%) of 798 cities, with health systems increasingly being affected by extreme weather events and supply chain disruptions.”

And, the authors are concerned that health systems have left themselves vulnerable to climate change–related health hazards because they have not adapted their operations for climate-related changes. “Only 48 of 95 countries have assessed their climate change adaptation needs and only 63% of countries reported high to very high implementation status for health emergency management in 2021. Increasing adaptation to climate change has the potential to simultaneously improve the capacity of health systems to manage both future infectious disease outbreaks and other health emergencies.”

There is roughly a 50% chance that the 1.5° C threshold proposed in the Paris Agreement will be exceeded within 5 years. The carbon intensity of the global energy system has been reduced by less than 1% from 1992 levels, when the United Nations Framework Convention on Climate Change was adopted. At our current pace, global emissions could be 13.7% above 2010 levels by 2030 and fully decarbonizing the energy system would take 150 years. Clearly, we are nowhere near meeting the goals of the Paris Agreement signed in 2015 by 192 countries and the European Union. Participants pledged to decrease their carbon footprint by 50% by 2030, and net zero by the end of the century.

The effect of increasing greenhouse gases in our atmosphere will have a massive impact on the prevention and care of cancer patients. Air pollution is responsible for about 14% of lung cancer deaths throughout the world. Rising temperatures lead to extreme weather events which disrupts infrastructure and the ability to access health care, leading to delays in treatment, increased morbidity, and death. Screening rates for cancer go down, which leads to more patients presenting with advanced cancer in the future.

As oncologists who care deeply about their patients, we need to get actively involved. It is our responsibility to our current and future patients to do whatever we can to prevent cancer and reduce its complications.

Dr. Schiller is a medical oncologist and founding member of Oncologists United for Climate and Health. She is a former board member of the International Association for the Study of Lung Cancer and a current board member of the Lung Cancer Research Foundation.

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