Panera Bread built much of its reputation on the idea that fast food could be a little different. Instead of the usual greasy burgers and heavily processed meals, customers could walk in for whole-grain bagels, fresh sandwiches, salads, and ingredients marketed as cleaner choices.
That reputation helped make Panera a popular stop for people looking for something that felt a little better than traditional fast food. But investigations into pesticide residues in restaurant foods have raised an uncomfortable question: What does clean food really mean?
Two investigations, one published in 2019 and another in 2023, reported detecting glyphosate in several restaurant foods, including products from Panera. The findings have attracted attention because glyphosate is a widely used weedkiller, and Panera had spent years promoting its ingredient standards.
However, there is an important distinction between finding a chemical residue in food and proving that the food poses a health risk. The testing raises questions worth examining, but it does not establish that eating Panera products causes illness.
The investigation that put Panera’s whole-grain bagel in the spotlight
In March 2019, GMO Free USA released a report titled Eating Out: A Date with Glyphosate. The investigation examined 44 food samples representing 38 menu items from 15 restaurant chains.
The researchers included restaurants known for promoting clean, natural, or higher-quality ingredients, as well as conventional fast-food businesses.
According to the report, glyphosate was detected in 39 of the 44 samples. The organization also reported detections in 33 of the 38 menu items.
Panera’s whole-grain bagel attracted particular attention because the report identified it as the highest-result sample in the investigation.
Later coverage widely reported a reading of 677 parts per billion (ppb), alongside two other reported bagel results of 336 and 522 ppb. The exact 677 ppb figure has not been independently reverified against the original laboratory records, so it deserves some caution.
Still, the report placed Panera’s whole-grain bagel at the center of a much bigger conversation about pesticide residues in restaurant food.
A second investigation brought Panera back into the conversation
The discussion did not end with the 2019 report.
In October 2023, Moms Across America announced another investigation involving 42 food samples from 21 restaurant brands. The testing was performed by Health Research Institute Laboratories.
This time, the original laboratory certificate provided more detailed measurements, separating glyphosate from AMPA, a chemical produced when glyphosate breaks down.
Two Panera products were included: a steak-and-cheddar sandwich and a deli ham sandwich.
The steak-and-cheddar sample contained 172.21 ppb of glyphosate alone, while the deli ham sample contained 197.23 ppb.
When the laboratory incorporated AMPA into its effective-residue calculation, the respective results were 213.58 and 225.53 ppb.
Together, those two effective-residue figures add up to 439.11 ppb. That number has appeared in discussions about Panera’s testing results, but it needs an important explanation.
It does not mean one sandwich contained 439.11 ppb. It is the sum of two separate laboratory results, not the concentration measured in a single meal.
Moms Across America ranked Panera highest using its combined brand figure. However, the individual laboratory results also included a higher effective-residue reading from another sample. This is why brand rankings and individual food measurements should not be confused.
What exactly is glyphosate, and how does it get into food?
Glyphosate is a broad-spectrum herbicide used to control weeds in agricultural and nonagricultural settings.
Farmers use glyphosate-based products on several crops, including corn, soybeans, canola, sugar beets, and cereal grains.
Residues can remain on harvested crops and make their way into ingredients used in everyday foods. Grain-based products deserve particular attention because some agricultural practices involve applying herbicides before harvest.
That provides a possible pathway for residues to enter flour, bread, and other baked products.
However, neither restaurant investigation traced Panera’s tested foods back to a particular farm, supplier, or spraying event. It would therefore be inaccurate to claim that a specific agricultural practice caused the results.
Does finding glyphosate mean the food is unsafe?
This is where the conversation becomes more complicated.
The International Agency for Research on Cancer classified glyphosate as probably carcinogenic to humans in 2015. Its assessment considered evidence from human studies, animal experiments, and laboratory research.
However, other regulatory organizations have reached different conclusions.
The U.S. Environmental Protection Agency’s earlier assessment found glyphosate was not likely to be carcinogenic to humans under its evaluation. That assessment later became part of a withdrawn registration-review decision, and the agency was preparing an updated human-health assessment in 2026.
The European Food Safety Authority also reported in 2023 that it had not identified critical areas of concern for the assessed uses, although some questions and data gaps remained.
These differences matter because identifying a potential hazard is different from determining the risk associated with a particular exposure.
A laboratory finding tells researchers that a substance was detected in the tested material. It does not automatically establish how much a person consumes over time or whether that exposure causes illness.
Neither restaurant investigation measured consumer health outcomes or established that eating the tested Panera products causes cancer or other diseases.
What did Panera mean by its famous clean-food promise?
Perhaps the most interesting part of this story is the gap between what consumers might understand by clean food and what Panera actually promised.
Panera began its menu-cleanup commitment in 2014. In 2015, it introduced its No No List, identifying ingredients and additives it intended to remove.
By January 2017, the company announced that it had completed its menu-cleanup commitment.
The initiative focused on removing specified artificial flavors, preservatives, sweeteners, and colors from artificial sources.
In other words, Panera’s definition of clean was based on an ingredient and additive standard. The reviewed corporate definition did not explicitly promise that every menu item would be free of glyphosate or all pesticide residues.
That distinction is important. A restaurant can remove artificial additives from its recipes without guaranteeing that agricultural ingredients contain absolutely no detectable pesticide residues.
Still, customers may interpret broad phrases such as 100% clean food differently, particularly when a brand uses them to distinguish itself from competitors.
The lawsuits raised questions about how consumers understood the marketing
Panera’s clean-food messaging also became the subject of consumer-protection litigation.
In March 2019, Brianna Tabler filed a proposed class-action lawsuit in California. The complaint challenged Panera’s marketing, arguing that consumers could be misled by clean-food representations when products contained glyphosate residues.
The case focused on alleged misleading advertising and consumer economic injury, including claims about paying a premium for products marketed as clean.
In June 2020, the court dismissed the amended complaint with permission to amend it again, finding that the plaintiff had not sufficiently identified the specific statements she had seen and relied upon.
That decision did not establish that Panera’s food contained no glyphosate. It also did not establish that the company knowingly deceived customers.
A separate lawsuit was brought in Washington, D.C., by Clean Label Project and GMO Free USA. It should not be confused with the California case.
Neither investigation nor the reviewed court records establishes that Panera knowingly sold dangerous food or that consumers suffered illnesses from the tested products.
What should customers take away from the findings?
The Panera story offers a useful reminder that food marketing can be more complicated than a catchy slogan.
Words such as natural, fresh, and clean do not necessarily mean pesticide-free. If customers want to understand a company’s food standards, looking beyond the marketing language is worthwhile.
It is also important to read laboratory findings carefully. Sample sizes, testing methods, detection limits, and the difference between individual results and combined figures all affect what the numbers actually mean.
For now, the available investigations raise legitimate questions about pesticide residues in restaurant ingredients, but they do not establish that Panera’s products are unsafe or that its clean-food promise explicitly guaranteed glyphosate-free meals.
The bigger takeaway? A clean ingredient list and a pesticide-residue test measure two different things. Consumers deserve clear information about both, especially when a restaurant makes food quality a major part of its identity.
