Glyphosate in Cereal: Monsanto’s Weedkiller Detected at
Alarming Levels, Report Saysby
Christine Ruggeri, CHHC
Published: October 24, 2018
Environmental Working Group (EWG) just released its second round of 2018
test results measuring glyphosate, the active ingredient in Monsanto’s
Roundup weed killer, in popular oat-based cereals and foods.
The nonprofit organization released the new results after two companies,
Quaker and General Mills, told the public it has no reason to worry about
traces of glyphosate in its products.
Seems that’s not the case.
Glyphosate in CerealIn the latest batch of testing, all
but two of the products tested contained levels of the
potentially-carcinogenic weedkilling chemical above 160 parts per billion
(ppb), the health benchmark set by EWG.
These findings come two months after EWG released its first series of
tests measuring glyphosate in popular children’s breakfast products.
Still, 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
In the October 2018 batch of testing, EWG commissioned Anresco
Laboratories to test a range of oat-based products, including 10 samples
of different types of General Mills’ Cheerios and 18 samples of Quaker
brand products. These included cereals, snack bars, granola and instant
oats. Of the 28 products tested, those with the highest levels of
- Quaker Oatmeal Squares, Honey Nut (2,837 ppb)
- Quaker Oatmeal Squares, Brown Sugar (2,746 ppb)
- Quaker Overnight Oats, Unsweetened with Chia Seeds (1,799 ppb)
- Cheerios, Oat Crunch Cinnamon (1,171 ppb)
- Quaker Overnight Oats, Raisin Walnut & Honey Heaven (1,029 ppb)
- Quaker Breakfast Squares Soft Baked Bars, Peanut Butter (1,014 ppb)
- Quaker Breakfast Flats Crispy Snack Bars, Cranberry Almond (894 ppb)
- Apple Cinnamon Cheerios (868 ppb)
- Honey Nut Cheerios (833 ppb)
- Chocolate Cheerios (826)
The tested products contain glyphosate at levels well above EWG’s safety
standard of 160 ppb; Quaker Oatmeal Squares breakfast cereal contained
levels of glyphosate 18 times higher than the benchmark.
A Look at Previous Glyphosate in Cereal TestingEarlier in
the 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), the following
products exceeded that limit in one or both samples tested, with the
starred products exceeding 400 ppb:
- 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.
Earlier in the year, a jury found Monsanto liable in a $289
million-dollar-cancer verdict, independent lab tests.
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
Lymphoma. The bad news? The latest testing 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
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.
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 Glyphosate 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
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
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
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
ProductsWhat 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
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 on Glyphosate in Cereal
- 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
- 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.