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A little-heard-of pesticide linked to infertility in animals is showing up in the overwhelming majority of samples of oat-based foods sold in the United States, including popular cereal brands Quaker Oats and Cheerios.
The chemical, chlormequat, was detected in 77 of 96 urine samples taken from 2017 and 2023, with levels increasing in the most recent years, a new study by the Environmental Working Group finds.
Further, chlormequat was found in 92% of non-organic oat-based foods tested in May 2023, including Quaker Oats and Cheerios, according to the research published Thursday in the Journal of Exposure Science and Environmental Epidemiology.
Some studies have shown chlormequat can damage the reproductive system and disrupt fetal growth in animals, a cause for concern as to “whether it could also harm humans,” EWG stated.
Environmental Protection Agency regulations allow chlormequat to be used on ornamental plants only, not food crops, grown the U.S. The chemical is used as a growth regulator for commercial production of cereal grains, making it easier to harvest the crops,according to the National Library of Medicine.
However, its use on imported oats and other foods sold across the country has been allowed since 2018, and the EPA is now proposing to let chlormequat be used on barley, oat, triticale and wheat grown in the U.S — a plan the EWG opposes.
Organic fare is a safer bet, with just one of seven organic samples found to contain low levels of chlormequat, EWG said.
“Until the government fully protects consumers, you can reduce your exposure to chlormequat by choosing products made with organic oats, which are grown without synthetic pesticides such as chlormequat,” according to the nonprofit advocacy group.
“All our products adhere to all regulatory requirements,” a spokesperson for General Mills told CBS MoneyWatch in a statement. “Food safety is always our top priority at General Mills, and we take care to ensure our food is prepared and packaged in the safest way possible.”
Quaker Oats, a division of PepsiCo, said it stands by the safety and quality of its products.
“We have a comprehensive food safety management system in place. We adhere to all regulatory guidelines to ensure the safest, highest quality products for our consumers,” Quaker stated.
