Bugs in Your Food: A Complete Guide to Insect Ingredients Hiding on Store Shelves
Why Eating Bugs Is Not the Health Win You Have Been Told
The mainstream narrative around edible insects frames them as a “sustainable” superfood, rich in protein and good for the planet. But there are legitimate and well-documented concerns that deserve honest discussion before anyone starts swapping their steak for cricket powder.
Key Takeaways/Tl;dr
- Chitin, the primary structural component of insect exoskeletons, is largely indigestible by humans and can cause bloating, gas, diarrhea, and immune reactions.
- A major 2019 study found parasites in over 81 percent of insect farms examined, with roughly 30 percent harboring parasites potentially pathogenic to humans, including tapeworm larvae and protozoa.
- Insect proteins share structural similarities with shellfish and dust mite proteins, posing a serious and under-communicated anaphylaxis risk for people with existing allergies.
- Cochineal extract (carmine), shellac (confectioner's glaze), and cricket flour (Acheta powder) are three of the most common intentionally added insect-derived ingredients in the American food supply, found in everything from yogurt and candy to protein bars and coated fruit.
- The FDA legally permits insect fragments, whole insects, larvae, and eggs in dozens of everyday foods including chocolate, coffee, peanut butter, flour, spices, canned vegetables, and grains.
- Regenerative grazing systems have been shown to sequester more carbon in the soil than the cattle emit, making properly raised grass-fed beef a far superior environmental and nutritional choice compared to insect-based protein.
Chitin Is Basically Indigestible by Humans
Chitin is a polysaccharide that makes up the exoskeletons of insects, as well as crustacean shells and fungal cell walls. Humans lack the enzymatic machinery to efficiently break it down. While researchers have identified a gene for acidic mammalian chitinase in humans, its functional capacity appears limited compared to truly insectivorous animals like bats and certain primates that evolved eating insects as a primary food source.
For many people, consuming significant amounts of chitin can lead to gastrointestinal discomfort, including bloating, gas, and diarrhea. Some research suggests that chitin may interfere with the absorption of other nutrients by binding to them in the digestive tract, potentially decreasing their bioavailability. Chitin also has immunogenic properties, which means that it can stimulate the immune system to produce antibodies against it, triggering inflammatory responses rather than resolving them. This is a particular concern for people with sensitive digestive systems, autoimmune conditions, or compromised gut health.
Those in favor of us all eating bugs compare chitin to dietary fiber, but this comparison is misleading. Plant fibers like cellulose come from foods humans have eaten for hundreds of thousands of years and are well tolerated by the vast majority of people. Chitin is structurally and functionally different, and we simply do not have long-term data on what regular consumption does to human health at population scale.
Most of us get the ick from just the thought of consuming bugs. Personally, I think this is an evolved response from hundreds of thousands of years of human development that helps our species avoid eating venomous or poisonous organisms.
Insects Are Documented Carriers of Parasites!!!
A widely cited 2019 study published in PLOS ONE examined 300 insect farms across Central Europe, including mealworm, house cricket, cockroach, and locust operations. Parasites were detected in over 81 percent of the farms. In roughly 30 percent of cases, the parasites identified were potentially pathogenic to humans, including tapeworm larvae (such as Hymenolepis diminuta and Hymenolepis nana), various protozoa, and nematodes. Which, when combined with a compromised gut microbiome, is a recipe for parasitic infection.
The study also found that insect farms exposed to contact with other animals and farms supplemented with insects from external sources were at significantly greater risk of infection. Tapeworm larvae identified in the study, known as cysticercoids, are capable of completing their life cycle in human hosts. Separate research has found Toxoplasma gondii DNA in dehydrated mealworm samples from commercial operations, highlighting that even processed insect products may carry contamination from their rearing substrates.
While cooking and thermal processing reduce parasite risk, the study underscores that insect farming is not inherently cleaner or safer than conventional animal agriculture, especially as it is being done right now, with very minimal regulation or oversight. Insects can also harbor bacteria including Salmonella, Staphylococcus aureus, Bacillus cereus, and Clostridium, as well as fungal contaminants and mycotoxins from their feed.
Certain Parasites Can Influence Host Behavior
This is well established in the scientific literature and worth understanding. Toxoplasma gondii, for instance, is a parasite that infects the brain and has been linked in research to altered risk-taking behavior, mood disorders, slower reaction times, and changes in cognitive function in humans. While the primary routes of Toxoplasma infection are through undercooked meat and cat feces rather than insect consumption specifically, the fact that insect farming substrates can harbor this parasite adds another layer of concern to an already under-regulated food source. Tapeworms found in insects have also been documented to induce behavioral changes in their hosts, including decreased activity and altered responses to light, mechanisms that evolved to make infected organisms more likely to be consumed by a definitive host.
Shellfish or Dust Mite Allergy = Likely Insect Allergy
Insect proteins share structural similarities with shellfish and dust mite proteins, particularly a protein called tropomyosin. People with existing allergies to shrimp, crab, lobster, or dust mites may experience severe reactions to insect-derived foods, including IgE-mediated anaphylaxis. This cross-reactivity is clinically confirmed, yet it is not always clearly communicated on product labels, especially when cricket protein is listed under scientific names like "Acheta domesticus" that most consumers would not recognize as an insect ingredient.
Chemical Contamination Adds Another Layer of Risk
Insects can accumulate heavy metals, pesticides, and other environmental toxins depending on their feed and rearing conditions. As the insect farming industry scales rapidly with limited regulatory oversight, the long-term safety profile of these products in the human food chain remains genuinely understudied. We do not have decades of population-level data on regular insect consumption in Western diets, and the precautionary principle suggests caution rather than enthusiasm.
Insect-Derived Ingredients Hiding in Common Foods
Beyond the health concerns, most Americans would be surprised to learn how many insect-derived ingredients are already in the food supply. Some are added intentionally as colorants, coatings, and protein sources. Others are allowed by the FDA as “unavoidable byproducts of growing, harvesting, and processing food”.
Cochineal Extract and Carmine
(Red Dye from Crushed Beetles)
Carmine is a bright red pigment made from the crushed bodies of the female cochineal insect, a small scale bug that lives on prickly pear cacti primarily in Peru and the Canary Islands. It takes roughly 70,000 of these insects to produce just one pound of dye. Carmine has been used as a colorant since the Aztecs, and today it is found in a wide range of food products wherever a red, pink, orange, or purple hue is desired.
You will find carmine in yogurt, ice cream, candy, fruit juices, energy drinks, flavored milk, gelatin desserts, cake mixes, frosting, colored pasta, sausages, processed meats, jams, some cheeses, and alcoholic beverages. It is also widely used in cosmetics, particularly lipstick. Starbucks and several other major brands have removed it from their products due to consumer backlash.
Label names to watch for:
- Carmine Lake
- C.I. 75470
- E120 (primarily on imported products)
- Carminic acid
- Carmine
- Cochineal extract
- Cochineal
- Natural Red 4
- Crimson Lake
“Shellac” / Confectioner's Glaze
Made from Lac Bug Secretions
That shiny, smooth finish on your jelly beans, candy corn, chocolate-covered nuts, and even some apples is likely shellac, a resin secreted by the female lac bug (Kerria lacca) found in the forests of India and Thailand. The bugs attach themselves to tree branches, suck the sap, and secrete a hard, waterproof coating to protect their eggs. This resin is scraped from the branches, heated until it liquefies, strained, and dissolved in alcohol to create the food-grade glaze. It is estimated that roughly 100,000 to 300,000 insects are required to produce a single pound of shellac resin.
Shellac is classified as GRAS (generally recognized as safe) by the FDA and is used to coat candy, chocolate goods, fruit, coffee beans, chewing gum, pharmaceutical tablets, and nutritional supplements. Specific products known to contain shellac include candy corn, Whoppers, Milk Duds, Raisinets, Junior Mints, Sugar Babies, many varieties of jelly beans, and citrus fruit at the grocery store.
Label names to watch for:
- Natural glaze
- Pharmaceutical glaze
- Lac resin
- Gum lac
- E904 (primarily on imported products)
- Shellac
- Confectioner's glaze
- Confectioner's resin
- Resinous glaze
- Candy glaze
- Pure food glaze
Cricket Flour and Insect Protein Powders
Cricket flour, also known as cricket powder, is made by freezing, roasting, and grinding house crickets (Acheta domesticus) into a fine powder. It is increasingly showing up in protein bars, snack chips, crackers, pasta, baked goods, tortillas, granola, cookies, and meal replacement shakes. Some brands openly advertise their cricket content, while others list it under less recognizable scientific names.
Beyond cricket flour, other insect proteins entering the market include mealworm powder (from Tenebrio molitor larvae), black soldier fly protein (Hermetia illucens), and grasshopper powder. These are showing up in everything from protein supplements to pet food.
Label names to watch for:
- Partially defatted cricket powder
- Insect protein
- Insect flour
- Mealworm powder
- Mealworm protein
- Tenebrio molitor (mealworm)
- Gryllus (field cricket genus)
- Cricket flour
- Cricket powder
- Acheta powder
- Acheta protein
- Acheta flour
- Acheta domesticus
- Gryllodes sigillatus (banded cricket)
- Hermetia illucens (black soldier fly)
"Natural Flavoring" and Other Vague Label Terms
The FDA allows the term "natural flavoring" to cover a broad category of substances derived from plant or animal sources, including insects. While not every product labeled with natural flavoring contains insect derivatives, the vagueness of this category means there is no way to know for certain without contacting the manufacturer. Similarly, "natural color" and "color added" can sometimes obscure the presence of insect-derived colorants. If the source matters to you, treat these vague terms on any label as a prompt to investigate further.
Unavoidable Insect Contamination the FDA Allows in Everyday Foods
Beyond intentionally added insect ingredients, the FDA's Defect Levels Handbook sets allowable limits for insect fragments, whole insects, larvae, eggs, and other "natural or unavoidable defects" across dozens of food categories. The FDA's position is that it is economically impractical to produce food that is entirely free of these contaminants. Here is what is legally permitted:
Ground coffee: Up to 10 milligrams of animal excrement per pound, and 4 to 6 percent of beans by count may be insect-infested or moldy.
Chocolate: A standard 43-gram chocolate bar may contain up to 30 insect fragments and some rodent hair.
Wheat flour: Up to 75 insect fragments per 50 grams.
Peanut butter: An average of 30 insect fragments per 100 grams.
Canned tomatoes and sauces: Up to two maggots per 16-ounce can, or 30 fruit fly eggs per 100 grams in tomato juice.
Pasta and spaghetti: Up to 450 insect fragments per 16-ounce box.
Black pepper: Up to 40 insect fragments per teaspoon.
Ground cinnamon, paprika, oregano, and other spices: Hundreds of insect fragments permitted per standard serving. Ground oregano alone allows up to 1,250 insect fragments per 10 grams.
Frozen broccoli, spinach, and asparagus: Varying levels of aphids, thrips, mites, and larvae. Frozen spinach allows an average of 50 aphids, thrips, and mites per serving.
Raisins: Up to 35 fruit fly eggs and 10 whole insects per 8 ounces.
Cornmeal: An average of one or more whole insects, two or more rodent hairs, and 50 or more insect fragments per quarter cup.
Canned mushrooms: Up to 20 maggots per 4-ounce can.
Whole grains and stored grains: Commonly infested with weevils (rice weevils, granary weevils, maize weevils), grain beetles, and grain moths. The FDA acknowledges that larvae and pupae living inside grain kernels are impossible to completely remove before processing and end up as fragments in the final product.
Fig paste: Up to 13 insect heads per 100 grams.
In other words, if you eat any amount of processed or packaged food, you are most likely consuming insect parts on a regular basis whether you want to or not. The best way to avoid eating bugs is to buy whole foods and cook from scratch.
Why Regenerative Livestock Is the Real Solution, Not Bug Protein
Much of the push to normalize insect consumption is framed around environmental sustainability. The argument goes that insects require less land, water, and feed than conventional livestock and produce fewer greenhouse gas emissions. While this comparison holds up against industrial feedlot operations, it falls apart when compared to the properly managed regenerative grazing systems our ancestors used.
Regenerative agriculture, specifically holistic or adaptive multi-paddock grazing, works with natural ecological cycles. Cattle are rotated through pastures in a way that mimics the movement of wild herbivores, allowing grasses to recover, roots to grow deeper, and soil biology to be extremely nutrient dense. This process drives carbon dioxide out of the atmosphere and into the soil through photosynthesis and microbial activity.
A peer-reviewed lifecycle assessment of White Oak Pastures, a regenerative farm in Georgia, found that their multi-species pasture rotation system had a carbon footprint 66 percent lower than conventional commodity beef production. When soil carbon sequestration was factored in, the operation offset 100 percent of the greenhouse gas emissions from its cattle and up to 85 percent of the farm's total emissions. Research from Michigan State University has similarly shown that well-managed adaptive grazing can make grass-fed beef carbon-neutral or even carbon-negative in the short term.
Aside from carbon, regenerative grazing restores topsoil, improves water retention, increases biodiversity, reduces the need for synthetic fertilizers and pesticides, and produces nutrient-dense food on land that is often unsuitable for crop production. Cattle convert grasses and forages that humans cannot eat into highly bioavailable protein, fat, vitamins, and minerals. Grass-fed and finished beef is rich in omega-3 fatty acids, conjugated linoleic acid, fat-soluble vitamins A, D, E, and K2, and heme iron, nutrients that are either absent or poorly absorbed from insect or plant-based alternatives.
The narrative that we need to replace animal foods with bugs to save the planet ignores the reality that the problem was never the cow, it was how the cow was raised. Industrial feedlot operations and monoculture grain farming are environmentally destructive. We need regenerative livestock systems actively heal the land and replenish our depleted soils.
Rather than encouraging people to eat a suboptimal food source that carries legitimate risks around parasites, allergens, chitin indigestibility, and long-term unknowns, we should be scaling regenerative agriculture and making grass-fed, pasture-raised animal products more accessible to everyone.
Quick Reference: Insect-Derived Ingredient Names to Watch for on Labels
Red dye from insects: Carmine, cochineal extract, cochineal, Natural Red 4, crimson lake, carmine lake, C.I. 75470, E120, carminic acid
Insect-secreted glaze: Shellac, confectioner's glaze, confectioner's resin, resinous glaze, candy glaze, pure food glaze, natural glaze, pharmaceutical glaze, lac resin, gum lac, E904
Cricket-based protein: Cricket flour, cricket powder, Acheta powder, Acheta protein, Acheta flour, Acheta domesticus, partially defatted cricket powder, insect protein, insect flour
Other insect proteins: Mealworm powder, mealworm protein, Tenebrio molitor, Gryllodes sigillatus, Hermetia illucens, black soldier fly protein
Vague terms that may hide insect ingredients: Natural flavoring, natural color, color added
Frequently Asked Questions
How many bugs does the average American eat per year without knowing it?
Estimates vary, but a commonly cited figure is that the average person unknowingly consumes one to two pounds of insect parts annually through processed and packaged foods. This comes from the FDA-permitted levels of insect fragments, larvae, and eggs across dozens of food categories including coffee, chocolate, flour, spices, canned goods, and grains.
Is carmine (cochineal extract) dangerous?
For the general population, carmine is considered safe by the FDA. However, it has been documented to cause allergic reactions in a subset of people, including anaphylaxis at doses as small as one milligram. If you have known sensitivities to insect proteins or have experienced unexplained allergic reactions after eating red-colored foods, carmine may be worth investigating and avoiding.
Can I be allergic to cricket flour if I am allergic to shellfish?
Yes. Crickets and crustaceans like shrimp share a protein called tropomyosin, and clinical cross-reactivity has been confirmed. People with shellfish allergies should treat any product containing cricket flour, Acheta powder, or Acheta domesticus as a potential allergen. Dust mite allergy sufferers also face elevated risk through the same protein pathways.
Is chitin the same as fiber?
Not exactly. While chitin is technically classified as an insoluble fiber, it is structurally and functionally different from the plant-based fibers (like cellulose) that humans have consumed for millennia. Humans have limited ability to break down chitin enzymatically, and for some people it can cause digestive issues including bloating, gas, and diarrhea. Comparing chitin to the fiber in vegetables is an oversimplification.
Are insect-based foods regulated by the FDA?
The FDA does not have a specific, comprehensive regulatory framework for edible insects. Whole crickets raised for human food must be raised for that purpose, and insect-derived ingredients must be listed on ingredient labels. However, the use of scientific names like "Acheta domesticus" rather than plain-language descriptions like "ground crickets" means many consumers may not recognize what they are buying. There is currently no requirement for an allergen warning specific to insect-derived ingredients.
Is grass-fed beef really better for the environment than eating bugs?
It depends entirely on how the beef is raised. Industrial feedlot beef has a large environmental footprint. However, regenerative grazing systems that use adaptive multi-paddock management have been shown to sequester significant amounts of carbon in the soil, restore degraded land, increase biodiversity, and reduce reliance on synthetic inputs. A peer-reviewed study of White Oak Pastures found that their system offset 100 percent of their cattle's emissions through soil carbon sequestration. When done right, raising cattle on grass can be a net positive for the environment rather than a net negative.
What is the best way to avoid insect ingredients in my food?
Read every ingredient label carefully and familiarize yourself with the names listed in the quick reference section of this article. Prioritize whole, unprocessed foods from trusted local sources whenever possible. When buying packaged foods, look specifically for carmine, cochineal extract, confectioner's glaze, shellac, Acheta domesticus, cricket flour, and the other terms listed above. When in doubt, contact the manufacturer directly, especially if you see vague terms like "natural flavoring" or "natural color" on the label.
