A national environmental research and advocacy group Wednesday issued a second report documenting traces of the herbicide Roundup in popular oat cereals such as Cheerios, saying that its presence in food creates an unnecessary cancer risk to children.
It is the latest development in a controversy over the most widely used herbicide in the world, which most government regulators and food industry leaders say poses no health risk in the amounts that people get in their food.
“No question, our foods are safe,” said Michael Siemienas, spokesman for General Mills, the maker of Cheerios.
The Environmental Working Group, which uses science to advocate environmental policy changes, tested 28 food products containing oats.
It found that all but two contained traces of Roundup, an herbicide made by Monsanto that is widely used on everything from food crops to backyard weeds.
The levels, though, were far below the concentrations deemed unsafe by state and federal regulators.
The products included items made by Quaker Oats, a subsidiary of PepsiCo., and seven different kinds of Cheerios.
Scientists at EWG say the amounts it found are higher than the level they believe is safe for children — 160 parts per billion per serving. But that level is much lower than other recommendations in the United States, including the one set by the Environmental Protection Agency.
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“The EPA level is outdated and much too high to be protective of children’s health,” said Tasha Stoiber, a senior scientist with EWG.
But the question of how much of the herbicide in kids’ food is too much — and whether it’s a carcinogen at all — has become hotly debated among scientists and regulators around the world, with no clear answer.
The EPA, for example, sets a legal limit of 30 milligrams per kilogram in food.
The controversy began in 2015 when the World Health Organization’s International Agency for Research on Cancer declared glyphosate a probable carcinogen. Monsanto launched a public-relations campaign in response, arguing that its product is safe, and that the organization had ignored other studies that proved it.