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"Cleaning up the air we breathe prevents noncommunicable diseases as well as reduces disease risks among women and vulnerable groups, including children and the elderly,"said Flavia Bustreo, WHO Assistant Director-General Family, Women and Children's Health.
"Poor women and children pay a heavy price from indoor air pollution since they spend more time at home breathing in smoke and soot from leaky coal and wood cook stoves," she added.
"The risks from air pollution are now far greater than previously thought or understood, particularly for heart disease and strokes," said Dr Maria Neira, director of WHO's Department for Public Health, Environmental and Social Determinants of Health.
"Few risks have a greater impact on global health today than air pollution; the evidence signals the need for concerted action to clean up the air we all breathe," she said.
Later this year, WHO will release indoor air quality guidelines on household fuel combustion, as well as country data on outdoor and indoor air pollution exposures and related mortality, plus an update of air quality measurements in 1,600 cities from all regions of the world.