Underweight Babies Linked to Air Pollution

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Women who are exposed to air pollution generated by cars, power plants, and heating and cooling systems are more likely to have a baby that is born underweight, according to new research published this week in the journal Environmental Health Perspectives.

Low birth weight—defined as anything below 5.5 pounds—is linked to negative outcomes for babies, including increased mortality, chronic health problems, and stunted mental and physical development. The study, which is billed as the largest survey to date, looked at birth weight data on 3 million births recorded at 14 sites in nine different countries (across North America, South America, Europe, Asia and Australia). Researchers analyzed ambient air quality data for the area during the woman’s pregnancy. They found that in the places places they studied, “the higher the pollution rate, the greater the rate of low birth weight.”

And, as one of the lead researchers noted in a statement, they saw effects even if there weren’t crazy high levels of air pollution. “What’s significant is that these are air pollution levels to which practically everyone in the world is commonly exposed,” said Tracey Woodruff, a professor of obstetrics and gynecology and reproductive sciences at the University of California in San Francisco. “These microscopic particles, which are smaller than the width of a human hair, are in the air that we all breathe.” 

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In "News Is Just Like Waste Management," we unpack what the coronavirus crisis has meant for journalism, including Mother Jones’, and how we can rise to the challenge. If you're able to, this is a critical moment to support our nonprofit journalism with a donation: We've scoured our budget and made the cuts we can without impairing our mission, and we hope to raise $400,000 from our community of online readers to help keep our big reporting projects going because this extraordinary pandemic-plus-election year is no time to pull back.

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