US FDA and Cornell University Reports Show Glyphosate Residues in Corn, Soybeans and Pet Food

Posted on Oct 4 2018 - 2:59pm by Sustainable Pulse

The world’s most used herbicide, glyphosate, has been found in corn, soybeans and pet food by two different testing studies released by the The U.S. Food and Drug Administration (FDA) and Cornell University this week.

The FDA report released Monday on their 2016 testing program, showed that 2,670 domestic food samples were tested for pesticides, 99% of which were found to be in compliance with federal EPA pesticide residue standards and 4,276 imported food samples were tested, 90% of which were found to be in compliance with the EPA standards.

The FDA also tested for glyphosate and AMPA (the main metabolite of glyphosate) for the first time in a small range of products in 2016, these included corn, soybeans, eggs and milk. The results showed that glyphosate was found at high but legal levels in soybeans and corn but not in eggs or milk.

Summary of FDA Testing Results for Glyphosate and AMPA – 2016


Glyphosate: 241 samples (66% positive) – Mean Average 40 ppb, Highest 4500 ppb

AMPA: 238 samples (39% positive) – Mean Average 30 ppb, Highest 5500 ppb


Glyphosate: 25 samples (32% positive) – Mean Average 8 ppb, Highest 64 ppb

AMPA: 21 samples (4.3% positive) – Mean Average 0.7 ppb, Highest 17 ppb


Glyphosate: 264 samples (66% positive) – Mean Average 790 ppb, Highest 10,000 ppb

AMPA: 264 samples (61% positive) – Mean Average 840 ppb, Highest 13,990 ppb

Sustainable Pulse Director, Henry Rowlands, reacted to the FDA report; “The levels of glyphosate found in soybeans and corn are of great concern. In 1999, the EPA’s ‘safe level’ (MRL) for soybeans was raised from 0.1 mg/kg (100 ppb) to 20 mg/kg (20,000 ppb) in the USA and Europe. Likewise in 2004, the glyphosate MRL for soybean was raised from 0.2 mg/kg (200 ppb) to 10 mg/kg (10,000 ppb) in Brazil. A peer-reviewed study in 2014 suggested that these MRL adjustments were only made in response to actual observed increases in the glyphosate residue detected in GM HT soybeans.

“The FDA have also admitted that they didn’t test crops or food products for glyphosate until 2016. The reason they give for this disgraceful lack of control is that they have a limited budget. However, in reality 100 samples costs $20,000 or less, so I have never understood this excuse.

“The FDA should now be concentrating on testing all crops that are desiccated using glyphosate, these include wheat, oats, lentils, peas, soybeans, corn, flax, rye, triticale, buckwheat, millet, canola, sugar beets, sunflowers and potatoes.”

For more information and quotes on the FDA report please see here.

In a separate peer-reviewed study, also released on Monday by Cornell University, levels of glyphosate were found in a range of pet foods.

The 18 dog and cat foods tested were all mixtures of vegetable and meat ingredients, and one product was certified GMO-free. The study found that all of the products contained glyphosate at concentrations ranging from approximately 80 to 2,000 micrograms of glyphosate per kilogram (ppb).

“While the levels of glyphosate in pet foods surprised us, if a human ate it every day, their glyphosate exposure would still be well below the limits currently deemed safe,” one of the study authors Anthony Hay said.

Dr Michael Antoniou of King’s College London, who has conducted research on the health impacts of glyphosate herbicide, reacted in a quote for GM Watch; “The authors of this study, as quoted in this article, are ignoring established scientific principles and evidence in arriving at their conclusion that the levels of glyphosate residues found in the pet foods are “within a range that would be deemed safe for humans”.

“First, they do not acknowledge the well established principle of low dose toxicity, especially through endocrine disruption, which does not follow a linear ‘dose makes the poison’ model. Second, they ignore a large body of evidence that shows that daily intake of glyphosate well below what regulators have ruled as safe causes ill health to multiple organ systems such as the liver, kidney and reproductive system.”

1 Star2 Stars3 Stars4 Stars5 Stars
(4 votes, average: 5.00 out of 5)
About the Author

Sustainable Pulse is a global news outlet covering sustainable agriculture, GMOs and pesticides.

5 Comments so far. Feel free to join this conversation.

  1. Barbara Ann October 5, 2018 at 23:12 - Reply

    Cancer is the number one killer of dogs. Perhaps now we know why. Sad.

  2. K Finn October 6, 2018 at 15:09 - Reply

    The use of glyphosate as a “desicant” on crops such as wheat, while allowed in application instructions, is not common in practice, actually quite insignificant number if acres, < 5%. Use has proliferated as weed control prior to crop seeding, as no-till farming soil conservation practices have taken over from historic mechanical plowing. So that is a trade off. No-till farming methods yields better soil management and structure, but weeds flourish, and need to be kled off before seeding. Glyphosate must be degraded by soil microbes prior to seeding, so as to not have germination loss. The residues in corn and soybeans can be attributed to "Round-Up Ready" GMO farming practices where the chemical is applied to the growing plants for weed control. Not so for wheat, which is not GMO, nor "Round Up Ready.". Where the sun is plentiful (our bread basket states), "desicants" are unnecessary.

  3. Sally October 17, 2018 at 00:29 - Reply

    Could this possibly cause diabetes in dogs and cats? I have had 2 diabetic dogs . . . . just no reason for it . . . especially my last dog.

  4. Denise October 17, 2018 at 23:32 - Reply

    Vet clinics sell cat and dog food with GMO corn (meal) in it.
    No doubt laced with resiues of glyphosate.

  5. Joseph Tracy October 24, 2019 at 20:24 - Reply

    K Finn may or may no work for Monsanto, but his “information”, provided with no reference to reliable sources is 100% wrong. He does not seem to understand that the majority of conventional grain growers (as outlined in numerous articles) both in Canada and US use glyphosate as a “desiccant” about a week before harvest and there is a steady rise in this practice so that now about 90% of nonorganic grains have dangerous levels of glyphosate. That is the reason in 1999( last year of Clinton, major recipient of Monsanto), as the article above notes that the US EPA raised MRL ( safe level) 200 percent from 100 ppb to 20,000 ppb

Leave A Response