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People with gas and propane stoves breathe more unhealthy nitrogen dioxide
A new study of air pollution in U.S. homes reveals how much gas and propane stoves increase people’s exposure to nitrogen dioxide, a pollutant linked to childhood asthma. Even in bedrooms far from kitchens, concentrations frequently exceed health limits while stoves are on and for hours after burners and ovens are turned off.
Although most exposure to NO2 is caused by cars and trucks burning fossil fuels, the researchers estimate that the mix of pollutants coming from gas and propane stoves overall may be responsible for as many as 200,000 current childhood asthma cases. This estimate is based on the researchers’ new measurements and calculations of how much nitrogen dioxide people breathe at home because of gas stoves and the best available data on deaths from long-term exposure to outdoor NO2, which is regulated by the U.S. Environmental Protection Agency. The death toll estimate is approximate in part because it does not factor in the harmful effects of repeated exposure to extremely high levels of nitrogen dioxide in short bursts, as occurs in homes with gas stoves.
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