Glyphosate in Cereal: Monsanto’s Weedkiller Detected at Alarming Levels, Report Says

June 12, 2019

Environmental Working Group (EWG) just released its third round of 2019 test results measuring glyphosate, the active ingredient in Monsanto’s Roundup weed killer, in popular oat-based cereals and foods.

When the nonprofit organization released similar results last year, two companies, Quaker and General Mills, told the public it had no reason to worry about traces of glyphosate in their products.

After three rounds of testing that proves glyphosate is in popular cereal products, it seems that’s not the case. In fact, in the newest test results, the two highest levels of glyphosate were found in Honey Nut Cheerios Medley Crunch and Cheerios.

Glyphosate in Cereal

In the latest batch of testing that confirmed and amplified the findings from tests done in July and October of last year, all but four of the products tested contained levels of the potentially-carcinogenic weed-killing chemical above 160 parts per billion (ppb), the health benchmark set by EWG.

These findings come about one year after EWG released two series of tests measuring glyphosate in popular children’s breakfast products. That’s when General Mills and Quaker Oats Company immediately went on the defensive, claiming glyphosate levels found in its foods fell within regulatory limits set by the Environmental Protection Agency (EPA).

That may be true, but many public health experts believe the levels of allowable glyphosate in food are far too high and don’t properly protect human health. Previously, Environmental Protection Agency (EPA) calculations suggest that 1- to 2-year-old children likely experience the highest exposure to glyphosate, the potential cancer-causing chemical used in Monsanto’s Roundup. And according to the agency’s risk assessment, the exposure level is 230 times greater than EWG’s health benchmark of 160 ppb.

In the May 2019 batch of testing, EWG commissioned Anresco Laboratories to test a range of oat-based products, including 300 grams each of 21 oat-based cereals, snack bars, granolas and instant oats made by General Mills and Quaker. Of the 21 products tested, those with the highest levels of glyphosate include:

Honey Nut Cheerios Medley Crunch (833 ppb)
Nature Valley Crunchy Granola Bars, Maple Brown Sugar (566 ppb)
Nature Valley Granola Cups, Almond Butter (529 ppb)
Chocolate Peanut Butter Cheerios (400 ppb)
Nature Valley Baked Oat Bites (389 ppb)
Nature Valley Crunchy Granola Bars, Oats and Honey (320 ppb)
Nature Valley Crunchy Granola Bars, Peanut Butter (312 ppb)
Nature Valley Granola Cups, Peanut Butter Chocolate (297 ppb)
Nature Valley Fruit & Nut Chewy Trail Mix Granola Bars, Dark Chocolate Cherry (275 ppb)
Nature Valley Granola Protein Oats n Dark Chocolate (261 ppb)
Multi Grain Cheerios (216 ppb)
Nature Valley Soft-Baked Oatmeal Squares, Blueberry (206 ppb)
Fiber One Oatmeal Raisin Soft-Baked Cookies (204 ppb)
Nature Valley Granola Peanut Butter Creamy & Crunchy (198 ppb)
Nature Valley Biscuits with Almond Butter (194 ppb)

These tested products contain glyphosate at levels well above EWG’s safety standard of 160 ppb.

A Look at Previous Glyphosate in Cereal Testing

Last year, EWG set a more stringent health benchmark for daily exposure to glyphosate in foods than the EPA and tested an initial batch of products. Considering EWG’s standard of 160 parts per billion (ppb), after two rounds of testing, the following products exceeded that limit in one or both samples tested, with the starred products exceeding 400 ppb:

Granola
- Back to Nature Classic Granola*
- Quaker Simply Granola Oats, Honey, Raisins & Almonds*
- Nature Valley Granola Protein Oats ‘n Honey
Instant Oats
- Giant Instant Oatmeal, Original Flavor*
- Quaker Dinosaur Eggs, Brown Sugar, Instant Oatmeal*
- Umpqua Oats, Maple Pecan
- Market Pantry Instant Oatmeal, Strawberries & Cream
Oat Breakfast Cereals
- Cheerios Toasted Whole Grain Oat Cereal*
- Lucky Charms*
- Barbara’s Muligrain Spoonfuls, Original Cereal
- Kellogg’s Cracklin’ Oat Bran Oat Cereal
Snack Bars
- Nature Valley Crunchy Granola Bars, Oats ‘n Honey
Whole Oats
- Quaker Steel Cut Oats*
- Quaker Old Fashioned Oats
- Bob’s Red Mill Steel Cut Oats

Companies negatively affected by these tests may point to the EPA’s legal limit for glyphosate in oats, which is 30 parts per million. But since this outdated standard was set in 2008, the International Agency for Research on Cancer labeled glyphosate as “probably carcinogenic” and the California Office of Environmental Health Hazard Assessment categorized it as a “chemical known to the state to cause cancer.”

EWG suggests that the solution is simple – keep chemicals linked to cancer out of children’s food. This may start with the EPA sharply limiting glyphosate residues allowed on oats and prohibiting the chemical’s use as a pre-harvest drying agent.

Since last August, there have been three separate verdicts against Bayer-Monsanto, the makers of Roundup. Jurors in California awarded more than 2.2 billion dollars over claims that the toxic weedkiller caused cancer and Monsanto knew about this risk for decades, but went to extraordinary lengths to cover it up.

What does this mean for our children? Without some serious changes made to the food industry and EPA standards, they’ll continue to ingest potentially toxic levels of glyphosate for breakfast. Maybe this will be the last straw for consumers?

EWG turned to Eurofins, a nationally recognized lab with extensive experience testing for chemicals. This testing involved measuring the amount of glyphosate found in popular products containing oats. What is this a big deal? I’m glad you ask …

Previous research suggests that glyphosate, the active ingredient in Monsanto’s Roundup, is linked to the development of non-Hodgkin’s Lymphoma. The bad news? Tests have detected it in all but two of 45 non-organic product samples. The list of products tested includes Cheerios, Lucky Charms, Nature Valley granola bars and Quaker oats.

Alexis Temkin, PhD, an EWG toxicologist and the author of the report, expressed her concerns about these findings. “Parents shouldn’t worry about whether feeding their children healthy oat foods will also expose them to a chemical linked to cancer. The government must take steps to protect our vulnerable populations,” she said.

Until then, EWG and 19 food companies have delivered more than 80,000 names on a petition to the EPA demanding that they sharply limit glyphosate residues in oat products and prohibit its use as a preharvest drying agent.

Why Is Glyphosate in Our Food?

Why is there glyphosate in our food? According to the U.S. Geological Survey, 250 million pounds of glyphosate are sprayed on American crops each year. Glyphosate is primarily used on Roundup Ready corn and soybeans that are genetically modified to withstand the herbicide.

Glyphosate is a systemic herbicide, meaning it’s taken up inside of the plant, including the parts livestock and humans wind up eating.

And on top of that, glyphosate is sprayed on other non-GMO crops, like wheat, oats, barley and beans, right before harvest. Farmers sometimes call this “burning down” the crops and do this to kill the food plants and dry them out so that they can be harvested sooner.

How Much Is Too Much?

Why do we have to pay attention to glyphosate levels in our food? The simple answer is that glyphosate is linked to an elevated risk of cancer. In fact, the World Health Organization categorizes the weed-killing chemical as “probably carcinogenic in humans.”

So, really, any amount of glyphosate in our food is concerning, especially when it’s found in our children’s food. (And especially since children consume it during critical stages of development.)

So how did EWG come up with the limit for child glyphosate exposure? Using a cancer risk assessment developed by California state scientists, EWG calculated that glyphosate levels above 160 parts per billion (ppb) are considered too high for children. To break that down into simpler terms — a child should not ingest more than 0.01 milligrams of glyphosate per day.

How did tEWG come up with this health benchmark? Under California’s Proposition 65 registry of chemicals known to cause cancer, the “No Significant Risk Level” for glyphosate for the average adult weighing about 154 pounds is 1.1 milligrams per day. This safety level is more than 60 times lower than the standards set by the EPA.

To calculate the recommendation for children, EWG took California’s increased lifetime risk of cancer of one in 1 million (which is the number used for many cancer-causing drinking water contaminants), and added a 10-fold margin of safety, which is recommended by the federal Food Quality Protection Act to support children and developing fetuses that have an increased susceptibility to carcinogens. This is how EWG reached the safety limit of 0.01 milligrams of glyphosate per day for children.

EWG’s health benchmark concerning the amount of glyphosate that poses a threat in our food is much more stringent than what the EPA allows. Although this amount of glyphosate present in oat products doesn’t seem like much in one portion, imagine consuming that amount every day over a lifetime. Exposure to this toxic herbicide will certainly accumulate over time, which is worrisome, to say the least.

“The concern about glyphosate is for long-term exposure. As most health agencies would say, a single portion would not cause deleterious effects,” explains Olga Naidenko, PhD, EWG’s senior science advisor for children’s health. “But think about eating popular foods such as oatmeal every day, or almost every day — that’s when, according to scientific assessments, such amounts of glyphosate might pose health harm.”

And there is some controversy over whether or not we can trust government regulators to make sure the food we eat is safe. This past April, internal emails obtained by the nonprofit US Right to Know revealed that the FDA has been testing food for glyphosate for two years and found “a fair amount.” But these findings haven’t been released to the public. According to The Guardian, the news outlet that obtained these internal documents, an FDA chemist wrote: “I have brought wheat crackers, granola cereal and corn meal from home and there’s a fair amount in all of them.”

According to Naidenko, “It is essential for companies to take action and choose oats grown without herbicides. This can be done, and EWG urges government agencies such as the EPA, and companies to restrict the use of herbicides that end up in food.”

Glyphosate in Cereal: Organic vs. Non-Organic Products

What about organic cereals and oats? EWG findings suggest that organic products contain significantly less glyphosate that non-organic products. To be exact, 31 out of 45 conventional product samples contained glyphosate levels at or higher than 160 ppb, while 5 out of 16 organic brand products registered low levels of glyphosate (10 to 30 ppb). Of all the organic products tested, none of them contained a level of glyphosate anywhere near the EWG benchmark of 160 ppb.

Glyphosate can get into organic foods by drifting from nearby fields that grow conventional crops. Organic products may also be cross-contaminated during processing at a facility that also handles conventional crops.

While glyphosate was detected in some organic oat products, the levels were much, much lower than conventional products, or non-existent. So it looks like the rule still stands — to avoid increased exposure to cancer-causing chemicals like glyphosate, choose organic.

Final Thoughts

EWG commissioned independent laboratory tests to measure the levels of glyphosate present in popular oat-based products. Scientists found that almost three-fourths of the conventionally grown products contained glyphosate levels that are higher than what EWG considers safe for children.
Feeding your family clean, healthy meals may already feel like a daily challenge. We shouldn’t have to worry about whether or not our seemingly healthy choices contain toxic herbicides.
To join EWG to get glyphosate out of our food, take action here.