US government scientists have detected the weedkiller glyphosate linked to cancer in an array of commonly consumed foods, emails obtained through a freedom of information request show. The Guardian reports that the Food and Drug Administration (FDA) has been testing food samples for residues of glyphosate for two years, but has not yet released any official results.
Internal documents obtained by the Guardian show the FDA has had trouble finding any food that does not carry traces of the pesticide.
“I have brought wheat crackers, granola cereal and corn meal from home and there’s a fair amount in all of them,” FDA chemist Richard Thompson wrote to colleagues in an email last year regarding glyphosate. Thompson, who is based in an FDA regional laboratory in Arkansas, wrote that broccoli was the only food he had “on hand” that he found to be glyphosate-free.
That internal FDA email, dated January 2017, is part of a string of FDA communications that detail agency efforts to ascertain how much of the popular weedkiller is showing up in American food. The tests mark the agency’s first-ever such examination.
“People care about what contaminants are in their food. If there is scientific information about these residues in the food, the FDA should release it,” said Tracey Woodruff, a professor in the University of California San Francisco School of Medicine. “It helps people make informed decisions. Taxpayers paid for the government to do this work, they should get to see the information.”
FDA chemist Narong Chamkasem found “over-the-tolerance” levels of glyphosate in corn, detected at 6.5 parts per million, an FDA email states. The legal limit is 5.0 ppm. An illegal level would normally be reported to the EPA, but an FDA supervisor wrote to an EPA official that the corn was not considered an “official sample”.
Other findings detailed in the FDA documents show that in 2016 Chamkasem found glyphosate in numerous samples of honey. Chamkasem also found glyphosate in oatmeal products. The FDA temporarily suspended testing after those findings, and Chamkasem’s lab was “reassigned to other programs”, the FDA documents show.
Toxicologist Linda Birnbaum, who is director of the US National Institute of Environmental Health Sciences (NIEHS), said that current regulatory analysis of pesticide dangers does not account for low levels of dietary exposures.
“Even with low levels of pesticides, we’re exposed to so many and we don’t count the fact that we have cumulative exposures,” Birnbaum said.
The lack of government residue data comes as Monsanto attempts to bar evidence about glyphosate food residues from being introduced in court where the company is fighting off allegations its Roundup products cause cancer.