
Breakfast cereals are ultra-processed foods that contain additives such as chemicals, colourings, sweeteners, and preservatives to extend their shelf life. While ultra-processed foods have been linked to an increased risk of cancer, the specific link between breakfast cereals and cancer has been a subject of debate. Some studies have found traces of cancer-causing chemicals in breakfast cereals, while others have concluded that the levels of these chemicals are unlikely to pose a significant risk. The presence of chemicals in breakfast cereals and their potential impact on health has sparked concerns among consumers, leading to discussions about warning labels and regulatory measures.
| Characteristics | Values |
|---|---|
| Cancer-causing chemicals in breakfast cereals | Acrylamide, Glyphosate |
| Cancer risk | Ovarian, Brain |
| Cancer-causing chemical controversy | EPA says glyphosate is not a carcinogen; WHO says glyphosate is "probably carcinogenic to humans" |
| Cancer warning labels | Not required on breakfast cereals |
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What You'll Learn
- Glyphosate, a chemical in weed killers, has been found in breakfast cereals
- Studies show ultra-processed foods like breakfast cereals increase cancer risk
- Acrylamide, a chemical in breakfast cereals, is a potential cause of cancer
- The EPA says glyphosate is not a carcinogen, but WHO says it probably is
- Manufacturers say their breakfast cereals are safe despite glyphosate traces

Glyphosate, a chemical in weed killers, has been found in breakfast cereals
Breakfast cereals are ultra-processed foods that are often associated with an increased risk of developing cancer. A study funded by Cancer Research UK and the World Cancer Research Fund revealed that for every 10% increase in ultra-processed food in a person's diet, there was a 2% increased risk of cancer overall and a 19% increased risk for ovarian cancer specifically.
While breakfast cereals have been linked to cancer, it is important to note that the specific link between breakfast cereals and cancer is due to the presence of certain chemicals in them. One such chemical is acrylamide, which was added to California's Proposition 65 list of ingredients known to cause cancer and birth defects in 1990. Cereal manufacturers are not required to add cancer warnings to their labels, despite the presence of acrylamide, as it is naturally generated when carbohydrate-rich foods are baked, roasted, fried, or deep-fried.
Another concerning chemical found in breakfast cereals is glyphosate, the main ingredient in the weed killer Roundup. Glyphosate has been at the center of several lawsuits alleging that it causes cancer. While the Environmental Protection Agency (EPA) maintains that glyphosate poses "no risks to public health" and is "not a carcinogen", other organizations disagree. The World Health Organization's International Agency for Research on Cancer determined in 2015 that glyphosate is ""probably carcinogenic to humans."
The Environmental Working Group (EWG) has consistently found glyphosate in popular breakfast cereals, including Cheerios and Nature Valley products. The levels of glyphosate detected were higher than what EWG scientists consider protective of children's health. General Mills, the manufacturer of these products, has stated that food safety is a top priority, and they are working to minimize the use of pesticides on their ingredients.
The presence of glyphosate in breakfast cereals is concerning, especially for children's health. While the EPA's legal limits for glyphosate have not been exceeded in food products, it is important for consumers to be informed about the presence of chemicals in their food, even at low levels.
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Studies show ultra-processed foods like breakfast cereals increase cancer risk
Several studies have found a link between ultra-processed foods and an increased risk of cancer. These foods include mass-produced bread, ice cream, breakfast cereals, ham, and crisps. One study, funded by Cancer Research UK and the World Cancer Research Fund, found that for every 10% increase in ultra-processed food in a person's diet, there was a 2% overall increased risk of cancer. The risk of ovarian cancer specifically increased by 19%.
Another study, published in eClinicalMedicine, examined the diets of 197,426 people aged 40 to 69 over a decade. It found that higher consumption of ultra-processed foods was associated with a greater risk of developing cancer, specifically ovarian and brain cancers. This link remained even after adjusting for factors like exercise, BMI, and deprivation.
While not all processed food is harmful, ultra-processed foods (UPFs) often contain ingredients that people would not typically use when cooking homemade food. These ingredients include chemicals, colourings, sweeteners, and preservatives to extend shelf life.
Breakfast cereals have been at the centre of the debate surrounding ultra-processed foods and cancer risk. Some studies have found that popular breakfast cereals test positive for trace amounts of glyphosate, the main ingredient in the weed killer Roundup. While manufacturers maintain that their foods are safe, legal verdicts have determined that Roundup caused cancer in plaintiffs.
Additionally, acrylamide, a chemical identified by federal and state agencies as a potential cause of cancer, is present in breakfast cereals. However, there is conflicting information on the need for cancer warnings on cereal labels. While California's Proposition 65 requires businesses to notify the public when their products contain cancer-causing ingredients, cereal makers like Kellogg's, General Mills, and Post have avoided adding cancer warnings to their labels.
The debate highlights the complex nature of food safety regulations and the ongoing research into the potential health risks associated with ultra-processed foods, including breakfast cereals. While some studies suggest a link between these foods and an increased risk of cancer, further research is needed to confirm these findings and inform policy decisions.
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Acrylamide, a chemical in breakfast cereals, is a potential cause of cancer
Breakfast cereals are ultra-processed foods that have been linked to an increased risk of cancer. A study funded by Cancer Research UK and the World Cancer Research Fund found that a 10% increase in ultra-processed food in a person's diet led to a 2% overall increased risk of cancer and a 19% increased risk of ovarian cancer.
Acrylamide, a chemical found in breakfast cereals, is a potential cause of cancer. It was added to California's Proposition 65 list of ingredients known to cause cancer and birth defects in 1990. Acrylamide is generated naturally when carbohydrate-rich foods are baked, roasted, fried, or deep-fried. While cereal manufacturers are not required to add cancer warnings to their labels, the presence of acrylamide in breakfast cereals is concerning.
In addition to acrylamide, traces of glyphosate, the main ingredient in the weed killer Roundup, have been found in popular breakfast cereals. While the Environmental Protection Agency (EPA) has stated that glyphosate does not pose a risk to public health and is not a carcinogen, the International Agency for Research on Cancer, a World Health Organization agency, determined in 2015 that glyphosate is "probably carcinogenic to humans." The presence of glyphosate in breakfast cereals is particularly concerning for children's health, as they may be more vulnerable to the effects of toxic chemicals.
While the scientific evidence on the cancer-causing effects of acrylamide in breakfast cereals is still evolving, the potential risk is serious enough that some health organizations have recommended reducing the consumption of ultra-processed foods, including breakfast cereals, to reduce the overall risk of cancer. It is important for consumers to be aware of the potential risks associated with the chemicals in their food and make informed decisions about their diet.
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The EPA says glyphosate is not a carcinogen, but WHO says it probably is
Breakfast cereals are ultra-processed foods that contain additives such as chemicals, colourings, sweeteners, and preservatives to extend their shelf life. These additives are not typically added to homemade food. While ultra-processed foods have been linked to an increased risk of cancer, it is important to note that the link between ultra-processed foods and cancer is based on observational studies where individuals self-reported their dietary intake.
One particular chemical that has been a cause for concern in breakfast cereals is acrylamide. Acrylamide is a chemical that is generated naturally when carbohydrate-rich foods are baked, roasted, fried, or deep-fried. In 1990, acrylamide was added to California's Proposition 65 list of ingredients known to cause cancer and birth defects. However, despite the presence of acrylamide in breakfast cereals, cereal manufacturers are not required to add cancer warnings to their labels. Federal health officials argue that such warnings could cause more harm than good and may confuse and mislead consumers, potentially leading them to avoid whole grain foods.
Another chemical that has been detected in breakfast cereals is glyphosate, the main ingredient in the weed killer Roundup. The Environmental Working Group found that popular breakfast cereals, including Cheerios and Nature Valley products, tested positive for trace amounts of glyphosate. While manufacturers maintain that their foods are safe, there have been legal verdicts linking glyphosate to cancer in plaintiffs.
The controversy surrounding glyphosate centres on conflicting assessments by the US Environmental Protection Agency (EPA) and the World Health Organization (WHO). The EPA has consistently maintained that glyphosate is not a carcinogen and poses no risks to public health when used properly. In contrast, the WHO's International Agency for Research on Cancer (IARC) determined in 2015 that glyphosate is "probably carcinogenic to humans." The IARC has defended its conclusion, stating that it has been subject to coordinated efforts to undermine its evaluation. The EPA, on the other hand, claims to have considered a more extensive and relevant dataset than the IARC and asserts that its findings are consistent with other international expert panels and regulatory authorities. The EPA's evaluation of glyphosate's potential health and environmental risks is ongoing, and the agency intends to update its evaluation to include the most current scientific information.
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Manufacturers say their breakfast cereals are safe despite glyphosate traces
Several popular breakfast cereals, including Cheerios and Nature Valley products, have tested positive for trace amounts of glyphosate, a controversial herbicide that may increase the risk of cancer. Glyphosate is the main ingredient in the weed killer Roundup, and it is sprayed on crops like oats to dry them out before harvest. This makes it easier to harvest the crops, but it also increases the likelihood of glyphosate ending up in children's cereals.
The Environmental Working Group (EWG), an environmental advocacy group, found that all 21 of the products it tested had levels of glyphosate that were higher than what its scientists consider protective of children's health. The group has a shared services agreement with the Organic Voices Action Fund, a nonprofit organization funded by companies that make cereal, including Nature's Path and Annie's. General Mills, the manufacturer of Cheerios and Nature Valley products, maintains that its foods are safe and that food safety is a "top priority" for the company. The company stated that it is working to minimize the use of pesticides on the ingredients it uses, and that "most crops grown in fields use some form of pesticides, and trace amounts are found in the majority of food we all eat."
The question of whether glyphosate is safe is a complex and highly debated topic. The World Health Organization's International Agency for Research on Cancer declared in 2015 that glyphosate is a probable carcinogen, and this decision spurred a federal case in the United States. California has since declared glyphosate to be a chemical known to cause cancer. However, the EPA has stated that the proper use of glyphosate poses "no risks to public health" and that it "is not a carcinogen." Additionally, a separate WHO panel assessing pesticide residues in 2016 concluded that "glyphosate is unlikely to pose a carcinogenic risk to humans from exposure through the diet."
While the presence of glyphosate in breakfast cereals has raised concerns, it is important to note that the levels found in food products have not exceeded the Environmental Protection Agency's legal limits. Dr. Paolo Boffetta, associate director for population sciences at Mount Sinai's Tisch Cancer Institute, stated that it is not surprising to find very low levels of pesticides, including glyphosate, in foodstuffs, and that these levels are generally unlikely to cause health effects in consumers. However, Boffetta also emphasized the importance of people knowing whether there are glyphosate or other chemicals in their food, even at very low levels.
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Frequently asked questions
Some breakfast cereals have been found to contain traces of chemicals that are potentially carcinogenic. These include acrylamide, glyphosate (a herbicide), and other weed killers.
Acrylamide is a chemical compound that is present in some breakfast cereals. It is also a component of tobacco smoke and is found in other foods like coffee, French fries, and potato chips. While it has been linked to an increased risk of cancer, the specific mechanism is still being studied.
Glyphosate is the main ingredient in the weed killer Roundup. It can make its way into processed foods, including breakfast cereals, when used on farms that grow oats. The EPA has stated that proper use of glyphosate poses no health risks, but the World Health Organization and other studies have contradicted this, stating it is "probably carcinogenic to humans."
Yes, aside from potential carcinogens, ultra-processed foods like breakfast cereals have been linked to an increased overall risk of cancer, specifically ovarian and brain cancers. They may also be linked to other health issues such as heart disease, dementia, obesity, and type 2 diabetes.











































