Harmful Chemicals Are Flooding the US Food Supply

• The FDA allows food manufacturers to introduce new additives without independent safety testing, meaning thousands of chemicals are in the U.S. food supply with little oversight
• Many food additives, including emulsifiers and preservatives, disrupt gut bacteria, leading to inflammation, metabolic disorders, and immune dysfunction
• The Generally Recognized as Safe (GRAS) loophole allows companies to self-certify chemicals as safe, even when long-term health effects are unknown
• Heavy metals like arsenic and lead are present in common foods due to weak enforcement standards, contributing to cognitive decline and increased disease risk
• Avoiding ultraprocessed foods, choosing organic when possible, and learning how to read ingredient labels will drastically reduce exposure to harmful additives

(Mercola)—Food is one of the biggest industries in America. According to a report from CBS News Health Watch, it’s estimated that Americans spend a total of $1.7 trillion every year on food and beverages. However, there’s a big issue lurking underneath that most people don’t know. “American food companies keep secret much of what they put in their products,” the report indicated.¹

For decades, food companies have taken advantage of a regulatory loophole known as the Generally Recognized as Safe (GRAS) rule, which allows manufacturers to determine the safety of their own additives without requiring FDA (U.S. Food and Drug Administration) approval. This means that companies will be able to introduce new chemicals into the food supply without notifying regulators or conducting long-term studies on their effects.

The result is a system where profit-driven decisions affect public health, and leaving consumers exposed to substances that will undoubtedly harm their bodies over time.²

Exposing the Chemicals Affecting the Health of Americans

The FDA, the agency responsible for regulating food additives, has allowed food manufacturers to introduce new substances with little oversight, often relying on industry-funded research rather than independent evaluation — a glaring public health issue that CBS News Health Watch just tackled.³

• Allergens are rampant in food products — The report indicates that certain ingredients in food products are listed under catchall terms such as “spices” and “artificial flavors.” Other potential allergens used in food production, such as milk, wheat, eggs, and dyes are sometimes undisclosed, leading to numerous food recalls due to causing harm among consumers.⁴
• Banned in other countries, but not in America — An egregious oversight by the FDA is its permission to add titanium oxide in foods to help enhance their appearance. Its use is so widespread — investigations reveal that it’s in more than 1,900 products.

In the European Union, titanium oxide has been banned, and their regulatory board states that it “can no longer be considered as safe when used as a food additive.”

In a previous article I wrote, research has shown that titanium oxide negatively alters your gut microbiota composition, ultimately affecting immune function. Moreover, it’s been shown to cause obesity by affecting metabolic health, as well as contribute to neurotoxicity.

Potassium bromate is another ingredient banned in the European Union (EU) but still used in America. It’s found in more than 200 products, mostly in baked goods such as bread and bagels. According to the CBS News Health Watch report, the International Agency for Research on Cancer identified it as a possible carcinogen more than 25 years ago.⁵

• Ultraprocessed foods are widespread — Another striking revelation made by the report was the amount of ultraprocessed foods currently in circulation. Specifically, these products now make up a whopping 73% of the U.S. food supply. Moreover, they’re designed to be addictive, which leads to overeating that contributes to the ever-growing epidemic of obesity.⁶
• European regulations are ahead compared to the FDA — Another finding in the report is the ineffectiveness of the FDA when it comes to reviewing ingredients. “When the FDA formally approves substances for use in food, it can let decades pass without reassessing them — even when subsequent research raises doubts about their safety,” the report said.

But in the EU, ingredients are required to pass regulatory approval before being used in food products. In addition, the EU requires food regulators to reassess all chemical additives that were released before January 20, 2009. Jim Jones, former deputy commissioner of the FDA’s Human Foods Program, says that while the FDA has the authority to do a post-review of food additives, it’s not mandated.⁷

The FDA’s Weak Oversight Is Affecting Public Health

Going deeper into the oversight issue, a study published in American Journal of Public Health examined how the FDA’s outdated regulatory framework has allowed thousands of chemicals into the U.S. food supply without proper safety assessments.^8,9

The research highlights how food manufacturers take advantage of loopholes to introduce additives without independent review, raising serious concerns about long-term health risks. The study also outlines how these chemicals, many of which were never tested for chronic exposure, have been linked to metabolic disorders, neurological conditions, and immune dysfunction.¹⁰

• Thousands of chemicals are currently approved for use in food — The study reveals that the FDA has not conducted independent safety reviews on most of them. Many additives were either self-certified as safe by manufacturers or were approved decades ago based on outdated research.

The lack of transparency in the approval process means that consumers are often unaware of the substances they are ingesting daily. Some of these chemicals, such as synthetic emulsifiers and preservatives, have been linked to gut microbiome disruption, which plays a key role in immune function and metabolic health.¹¹

• Companies exploit a regulatory loophole to maximize profits — One of the major issues uncovered in the study is the Generally Recognized as Safe (GRAS) loophole. This regulatory issue allows food companies to introduce new additives without requiring FDA approval, as long as the company deems them safe. This means that chemicals with little to no long-term research will enter the food supply simply because a company claims they are harmless.

The study points out that even when concerns arise, the FDA has little authority to reevaluate or remove these additives from the market unless overwhelming evidence of harm is presented.¹²

• Some chemicals that were approved decades ago remain in use — The research highlights how certain chemicals are still widespread despite growing evidence of harmful effects.¹³

For instance, synthetic antioxidants like BHA (butylated hydroxyanisole) and BHT (butylated hydroxytoluene), which are commonly used to preserve processed foods, have been flagged in studies for their cancer risk.¹⁴

• Heavy metals are found in common food items — Contaminants such as arsenic and lead, which enter food through industrial processing, packaging, or even water sources used in agriculture, have no safe level of exposure.¹⁵ Again, since the FDA has set weak enforcement standards, this has allowed food companies to continue selling products with measurable amounts of these toxins.¹⁶
• Food chemicals compromise your gut function — Emulsifiers are chemicals used to improve the texture and shelf life of processed foods. While they help keep products from separating, research has shown that emulsifiers such as polysorbate 80 and carboxymethylcellulose disrupt gut bacteria.¹⁷

This imbalance in the gut microbiome triggers chronic inflammation, insulin resistance, and autoimmune responses. The widespread presence of these additives in everything from salad dressings to frozen meals means that millions of people are exposed daily without realizing the risks.

Food Additives Upset Your Biological Homeostasis

The biological mechanisms behind the harmful effects are particularly concerning. Many food additives interfere with the endocrine system, which regulates hormones crucial for metabolism, growth, and immune function.

• Chemicals act as xenoestrogens — Phthalates, which leach from food packaging, mimic estrogen and disrupt the body’s hormonal balance, contributing to obesity, infertility, and developmental issues in children.
• Chronic exposure to synthetic preservatives alters cellular function — Compounds such as sodium benzoate, used to extend shelf life in beverages and processed snacks, have been shown to increase oxidative stress.¹⁸

This damage leads to inflammation, which is linked to conditions such as Type 2 diabetes, heart disease, and neurodegenerative disorders like Alzheimer’s. Yet, the FDA does not require long-term studies on how these additives affect human health over time.¹⁹

• Food colorants influence neurological function — Artificial dyes like Red 40 and Yellow 5 have been associated with hyperactivity and behavioral disorders in children, with studies showing increased symptoms of ADHD following consumption. While some countries have banned these additives or require warning labels, the FDA continues to allow them in American food products without restriction.²⁰

The findings from this research make it clear — the FDA’s failure to regulate food additives properly has left consumers exposed to chemicals that harm gut health, disrupt hormones, and increase disease risk. These chemicals remain in the food supply not because they are safe, but because regulatory loopholes allow companies to prioritize profit over public health.

How to Reduce Your Exposure to Harmful Food Chemicals

While thousands of chemicals have been allowed into the food supply without proper safety testing, that doesn’t mean the situation is unavoidable. Here’s what I recommend to help you take control of your health:

1. Avoid ultraprocessed foods — If a food product has a long ingredient list with names you don’t recognize, it’s likely packed with chemicals your body doesn’t need. Ultraprocessed foods contain preservatives, emulsifiers, and artificial flavors that interfere with your metabolism and gut health. Stick to whole, fresh foods like grass fed meats and dairy, fruits, vegetables, and healthy carb sources like white rice. The more natural the ingredients, the better.
2. Eat a healthy, organic diet whenever possible — Organic foods are less likely to contain harmful additives and are free from synthetic pesticides that disrupt hormone function. If you can, prioritize organic versions of foods like leafy greens, fruits and meats. Stringent organic standards prohibit many artificial preservatives, dyes, and flavor enhancers, reducing your exposure to hidden toxins.
3. Learn how to read nutrition labels — Most food chemicals hide in plain sight under deceptive names. Artificial sweeteners like aspartame, preservatives like BHT, and emulsifiers like polysorbate 80 are all linked to gut and metabolic damage. Start checking ingredient lists and avoid anything with unpronounceable additives or vague descriptions like “natural flavors” and “modified food starch.” If you don’t recognize an ingredient, look it up before you eat it.
4. Choose safe food packaging and storage — Toxic chemicals don’t just come from food — they also leach from packaging. Plastics, especially those with BPA or phthalates, release hormone-disrupting chemicals into food. Choose glass or stainless steel for storing and heating food. Never heat food in plastic containers, as it releases harmful substances.
5. Cook more meals at home — Restaurants and packaged meals often contain the highest levels of preservatives, emulsifiers, and artificial colors. In addition, the majority of them cook their food with vegetable oils, which contain high amounts of linoleic acid. Cooking at home gives you full control over the quality of your food. Use real, grass fed butter or ghee instead of vegetable oils, and avoid processed seasonings filled with additives. Preparing meals from scratch doesn’t just cut out harmful chemicals — it also improves digestion, energy levels, and long-term cellular health.

Frequently Asked Questions About Chemicals Lurking in the Food Supply

Q: Why does the FDA allow so many chemicals in the U.S. food supply?

A: The FDA relies on outdated regulations that let food companies self-certify additives as safe under the Generally Recognized as Safe (GRAS) rule. This loophole allows manufacturers to introduce new chemicals into food without requiring independent safety testing or FDA approval. As a result, many additives that have never undergone long-term studies remain in circulation, putting public health at risk.

Q: What are some of the most harmful chemicals still allowed in American food?

A: Several chemicals banned in other countries are still widely used in the U.S. food supply. Titanium dioxide, which is used to brighten food products, has been banned in the EU due to its harmful effects on gut health and metabolism.

Potassium bromate, found in baked goods, has been linked to cancer but remains legal in the U.S. Additionally, synthetic antioxidants, which preserve processed foods, have been associated with hormone disruption and increased disease risk.

Q: How do food chemicals affect gut health and metabolism?

A: Many additives, including emulsifiers like polysorbate 80 and carboxymethylcellulose, alter gut bacteria, leading to chronic inflammation and insulin resistance. Artificial preservatives and dyes have also been shown to disrupt digestion and contribute to metabolic disorders. Since gut health plays a crucial role in immune function and weight regulation, prolonged exposure to these substances increases the risk of obesity, autoimmune issues, and other chronic diseases.

Q: What are some of the biggest differences between U.S. and European food regulations?

A: The EU has stricter regulations on food additives, requiring ingredients to be approved before they are used. The EU also mandates regular reassessment of food chemicals, while the FDA allows decades to pass without reviewing their safety. Many substances, including certain artificial dyes and preservatives, have been banned in Europe due to their health risks, yet they remain legal in the U.S. simply because the FDA lacks a requirement for reassessment.

Q: How can I reduce my exposure to harmful food chemicals?

A: You’ll be able to minimize exposure by avoiding ultraprocessed foods, choosing organic ingredients, and learning how to read nutrition labels for hidden additives. Storing food in glass or stainless steel instead of plastic helps prevent chemicals from leaching, and cooking at home ensures better control over ingredient quality. Prioritizing whole, fresh foods over pre-packaged items significantly lowers your intake of harmful additives.

• ^{1, 2, 3, 4, 5, 6, 7} CBS News Health Watch, March 7, 2025
• ⁸ NYU, August 8, 2024
• ^{9, 10, 11, 12, 13, 16, 19, 20} Am J Public Health. 2024 Oct;114(10):1061-1070
• ¹⁴ NIH, December 21, 2021
• ¹⁵ Foods. 2023 Sep 6;12(18):3340
• ¹⁷ Microbiome Volume 9, Article number: 66 (2021)
• ¹⁸ Nutrients. 2022 Apr 2;14(7):1497