Indoor pollution caused by coal stoves used by millions around the world may stunt the development of children.
According to a new study of families in the Czech Republic, children raised in houses with coal heating stoves are on average a half-inch shorter than their peers by the age of 3. And if someone in the house smokes cigarettes, the problem is worse — the research found a growth disparity of 0.8 inches.
The study, conducted by U.S. and Czech doctors and to be published in the Archives of Pediatrics and Adolescent Medicine, tracked 1,133 children from birth to 3 years of age, controlling for factors such as premature birth and breast-feeding. Of the sample, roughly 10 percent came from houses that used coal stoves.
Researchers are not certain as to whether the gap is usually recovered later in childhood, but previous studies on the effects of smoking have demonstrated that growth gaps can persist into adolescence or even adulthood.
“Air pollution is not a good thing, whether indoor or outdoor,” Dr. Len Horovitz, a lung specialist in New York City familiar with the research, told Reuters. “Cleaner indoor and outdoor air is a mandate that we have seen coming and needs to be addressed.”
The World Health Organization estimates that 1.6 million people die each year because of indoor air pollution. It says that roughly half the world’s population burns coal, dung, wood or crop wastes for heating or cooking.
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