Chief Science and Learning Officer
Air pollution is the leading environmental health risk globally.
This risk is especially acute for families without access to clean cooking, with up to four million people dying prematurely every year from illnesses associated with exposure to smoke from polluting, open fires or inefficient stoves. Cleaner, more modern stoves and fuels can reduce emissions and lessen the burden of disease associated with household air pollution (HAP).Read CCA’s Air Pollution Factsheet
2.4 billion people around the world depend on food cooked over polluting open fires or inefficient stoves. Exposure to HAP from burning wood, charcoal, coal, and kerosene is a leading risk factor for diseases including childhood pneumonia, chronic obstructive pulmonary disorder, ischemic heart disease, stroke, and lung cancer.
There is emerging evidence that when pregnant women are exposed to HAP, their infants are at increased risk for stillbirth, low birth weight, and decreased lung function. Emissions from household cooking are a significant source of ambient air pollution and a major contributor to climate change. Globally, as many as four million people die prematurely every year from illnesses attributable to HAP.
Replacing polluting open fires or inefficient stoves with cleaner, more modern stoves and fuels reduces emissions and personal exposure, thereby lowering the burden of disease associated with HAP.
Research suggests that significant exposure reductions are required to measurably reduce negative health impacts. Therefore, substantial improvements in health can only be achieved with intensive, near-exclusive use of the lowest emission cookstoves and fuels.
Randomized controlled trials of near-exclusive use have shown reductions in severe pneumonia in young children and reduced duration of respiratory infections in children. Additionally, emerging research about pregnancy indicates that switching to cleaner technologies and fuels lowers blood pressure in pregnant women, increases the baby’s birth weight, and increases the baby’s gestational age at delivery.
Researchers have posited several hypotheses linking household air pollution (HAP) and COVID-19 infection and severity.
CCA is working to better understand how Covid-19 is impacting individuals exposed to chronic HAP from indoor cooking and heating. In 2020, CCA convened more than 60 experts for a virtual workshop, and also developed and released a request for proposals to research the links between chronic HAP exposure and COVID-19 in low- and middle-income countries, where millions of people are exposed to dangerous levels of HAP from cooking and other sources. Following a competitive selection process, CCA awarded funding for two studies, with the goal of better understanding how reducing HAP could identify high-risk communities and mitigate future respiratory pandemics.