Some protein powders are indeed made from insects, and the market for them is growing. Cricket protein powder is the most widely available variety, though products derived from mealworms, locusts, and silkworm pupae also exist. These are not hidden ingredients slipped into your regular whey tub; insect-based protein is a distinct product category, typically marketed as such. Still, the question taps into real anxieties about what ends up in supplement powders, how insect protein stacks up nutritionally, and whether labeling is transparent enough to trust.
Which Insects End Up in Protein Powder
The house cricket (Acheta domesticus) dominates the insect protein market. It is farmed at commercial scale, dries well, and grinds into a fine, relatively neutral-tasting flour. Locusts and silkworm pupae are also commercially available as powders, particularly from producers in Southeast Asia.1LWT. Characterization of protein in cricket (Acheta domesticus), locust (Locusta migratoria), and silk worm pupae (Bombyx mori) insect powders The lesser mealworm (Alphitobius diaperinus) and black soldier fly larvae (Hermetia illucens) round out the short list of species that have received the most research attention and commercial development. If you buy an insect protein product in a Western market, there’s a strong chance it’s cricket-based.
These insects are not wild-caught. They come from controlled farming operations where temperature, feed, and humidity are managed to produce consistent batches. That farming step matters for safety and nutritional consistency, because what an insect eats directly affects what ends up in the powder.
How Insect Protein Powder Gets Made
Turning a cricket into something you’d stir into a smoothie takes more processing than you might expect. The general sequence starts with killing and drying the insects, then grinding them into a fine flour. That flour can be sold as-is, which gives you “whole cricket powder” containing protein, fat, fiber (from the exoskeleton), and minerals. But for a concentrated protein powder, manufacturers go further.
The fat has to come out first. This typically involves stirring the ground flour in a solvent like hexane, which dissolves the fat, and then evaporating the solvent off overnight.2PubMed Central. The Potential for the Use of Edible Insects in the Production of Protein Supplements for Athletes Some producers use ethanol instead, though the choice of solvent and whether the insects were blanched beforehand can change the protein profile. Ethanol, for instance, tends to cause some protein aggregation and can reduce the amount of protein recovered from the batch by a substantial margin.3Food Chemistry. Effect of thermal and defatting treatments on the composition, protein profile and structure of house cricket (Acheta domesticus) protein extracts
After defatting, the protein is extracted by dissolving the flour in an alkaline solution, spinning it in a centrifuge to separate insoluble material, then adjusting the pH to a point where the proteins clump together and can be collected. The resulting protein concentrate is freeze-dried into a shelf-stable powder.2PubMed Central. The Potential for the Use of Edible Insects in the Production of Protein Supplements for Athletes The process is more involved than simply drying and grinding whey, which partly explains why insect protein powders tend to cost more.
How Insect Protein Compares to Whey Nutritionally
Cricket protein contains all the essential amino acids, and the most abundant one is leucine, the amino acid most associated with triggering muscle protein synthesis. That’s the same amino acid that tops the chart in whey. But the quantities differ. When researchers measured the essential amino acid index of cricket protein powder, it came in around 79%, compared with about 94% for whey.4PubMed Central. Comparison of Cricket Protein Powder and Whey Protein Digestibility That gap is meaningful but not disqualifying.
Digestibility tells a similar story. In lab-simulated digestion, cricket protein reached about 80% digestibility during the intestinal phase, whereas whey exceeded 97%.4PubMed Central. Comparison of Cricket Protein Powder and Whey Protein Digestibility The chitin in insect exoskeletons is partly responsible. Human digestive enzymes don’t break chitin down efficiently, so some of the protein locked within those fibrous structures passes through without being fully absorbed. Despite this, researchers who’ve studied the comparison consistently describe cricket protein as a valuable protein source rather than a poor one.
Beyond the amino acids, insect proteins also have useful functional properties for food manufacturing, including the ability to foam, emulsify, and gel, which makes them versatile as ingredients in processed foods.5PubMed Central. Edible insect as an alternative protein source: a review on the chemistry and functionalities of proteins under different processing methods
Does It Actually Build Muscle
This is the question that matters most if you’re considering insect protein as a workout supplement. The evidence so far is encouraging but comes from a small number of trials. In a double-blind randomized study, participants who consumed lesser mealworm protein after exercise saw their muscle protein synthesis rates rise from baseline to levels statistically indistinguishable from those who drank milk protein concentrate. Both groups showed clear increases in muscle-building activity, and the researchers found no significant difference between the two.6The American Journal of Clinical Nutrition. Insects are a viable protein source for human consumption: from insect protein digestion to postprandial muscle protein synthesis in vivo in humans: a double-blind randomized trial
A separate study compared cricket protein, pea protein, and whey protein in young men after resistance exercise. Blood amino acid concentrations were significantly higher after whey than after either cricket or pea protein. But when researchers looked at the activation of mTORC1, the molecular signaling pathway that drives muscle growth, they found no difference between the three protein sources at rest or after exercise.7PubMed. Influence of protein source (cricket, pea, whey) on amino acid bioavailability and activation of the mTORC1 signaling pathway after resistance exercise in healthy young males A systematic review of the available randomized controlled trials confirmed this pattern: insect proteins produce lower peak amino acid levels in the blood compared with whey or milk, but the downstream muscle-building response appears equivalent.8PubMed. Insect Protein to Support Human Skeletal Muscle Anabolism: A Systematic Review of Randomised Controlled Trials
The practical takeaway: if you use insect protein powder after a workout, your muscles seem to respond to it about as well as they would to dairy protein, at least in the short term. The research base is still thin, with only a handful of trials in healthy young adults, so long-term effects and responses in older populations remain open questions.
Allergy Risks You Should Know About
If you have a shellfish allergy, insect protein powder deserves serious caution. Insects and crustaceans are both arthropods, and they share key allergenic proteins, especially tropomyosin. Allergic cross-reactivity between edible insects and crustaceans has been documented repeatedly, along with cross-reactivity with common inhalant allergens.9PubMed Central. Allergens from Edible Insects: Cross-reactivity and Effects of Processing
Perhaps more surprising is the connection with house dust mite allergy. Researchers found that tropomyosin and actin act as cross-reactive allergens between edible crickets and house dust mites, meaning people with dust mite allergies could react to cricket protein even if they’ve never eaten shellfish.10PubMed Central. Serological Cross-Reactivity and Potential Allergenic Risk of Edible Cricket Proteins in Children and Adolescents with House Dust Mite Allergy This is the kind of risk most consumers wouldn’t anticipate, and it’s one that labeling has not consistently addressed.
Speaking of labeling: a study of insect-based food products sold online in the EU found that only about 3% were fully compliant with labeling requirements. A common failure was incomplete or missing allergen declarations, which carries real safety implications for people with shellfish or dust mite sensitivities.11Food Control. Assessment of the information to consumers on insects-based products (Novel Food) sold by e-commerce in the light of the EU legislation The regulatory framework exists, but enforcement and manufacturer compliance lag behind the pace at which new products appear online.
Contaminant Concerns
Insects accumulate what they eat, which means the feed used in farming operations directly determines what ends up in the final product. Research on black soldier fly larvae found that different feed variants significantly affected both microbial contamination and heavy metal levels. Larvae contained detectable levels of cadmium, copper, lead, zinc, and other metals, and researchers identified several species of potentially pathogenic bacteria, including Klebsiella pneumoniae and Enterobacter cloacae.12Journal of Microbiology, Biotechnology and Food Sciences. SAFETY OF BLACK SOLDIER FLY LARVAE: MICROBIAL AND HEAVY METAL RISKS
This doesn’t mean every bag of cricket powder is contaminated. The levels found in controlled studies were generally within regulatory limits, and heat processing during manufacturing kills most pathogens. The concern is more about quality control across a fragmented industry where standards are still being established. For consumers, buying from established brands that follow food safety protocols and publish third-party testing is the best available protection.
Effects on Gut Health
One of the more interesting findings in insect nutrition research has little to do with muscle and everything to do with your gut bacteria. In a randomized crossover trial, adults who ate cricket-containing meals for two weeks showed a large increase in Bifidobacterium animalis, a probiotic species, with a log fold change of 5.7 compared to a control diet.13PubMed Central. Impact of Edible Cricket Consumption on Gut Microbiota in Healthy Adults, a Double-blind, Randomized Crossover Trial Cricket consumption was also associated with increases in other beneficial bacteria, including Lactobacillus and Blautia, and with enhanced production of short-chain fatty acids, which are broadly linked to gut health.14npj Science of Food. Gut microbiome modulation by cricket, pea, and whey protein using the SHIME in vitro simulator
The likely driver is chitin, the fibrous material in insect exoskeletons. While chitin reduces protein digestibility, it appears to act as a prebiotic, feeding beneficial gut bacteria. When researchers tested isolated chitin in colonic fermentation models, it increased microbial diversity more than whole insect powders did and promoted the growth of families associated with gut health.15Future Foods. Responses of the human gut microbiota to physiologically digested insect powders or isolated chitin thereof This dual role of chitin, as both a digestibility hurdle and a potential prebiotic, is one of the more intriguing tensions in the science of insect protein.
The Environmental Argument
Much of the marketing around insect protein leans on sustainability claims, and the science broadly supports them. Life cycle assessments have found that producing insect-based protein powder from food by-products is roughly two to five times more environmentally beneficial than producing traditional animal protein products, factoring in land use, water, greenhouse gas emissions, and energy.16Journal of Cleaner Production. Sustainability of insect use for feed and food: Life Cycle Assessment perspective
The comparison gets more nuanced when you line up insect protein against whey specifically. One prospective life cycle assessment found that lesser mealworm protein had lower environmental impacts than whey protein isolate in five of six impact categories under one accounting method, but only three of six under a different method.17Future Foods. Assessing the environmental sustainability of insects as a source of functional proteins: A prospective LCA Whey is already a byproduct of cheese manufacturing, so it carries a relatively light environmental burden compared to, say, beef. The sustainability advantage of insect protein is clearest when replacing meat-based protein sources rather than dairy byproducts.
What Products Actually Contain Insect Protein
An audit of commercially available insect protein foods identified four main product categories: flour and powder, pasta and noodles, starch-based snacks like chips and crackers, and energy bars. The flour and pasta products performed well nutritionally, delivering protein content comparable to their non-insect equivalents. Snacks and energy bars were less impressive, with significantly lower protein content than similar products made with other protein sources, probably because insects’ high fat content limits how much can be added before flavors become unpleasant.18PubMed Central. The Commercial Application of Insect Protein in Food Products: A Product Audit Based on Online Resources
Processing insects into forms that don’t look like insects turns out to be commercially important. Consumers are far more willing to eat insect protein when it’s been ground into a powder and incorporated into a familiar food format than when the insects are recognizable.19Current Opinion in Insect Science. Processing insects for use in the food and feed industry This is why you’re more likely to encounter cricket flour baked into a protein bar than a bag of whole roasted crickets at your grocery store.
Why Most People Still Won’t Try It
The science on nutrition, muscle building, and sustainability can line up perfectly and still not matter if people refuse to put the product in their mouths. Surveys of U.S. consumers reveal that disgust is the single most powerful barrier. Over half of participants who were unwilling to try insect-containing foods cited negative emotions as the reason, with disgust being the dominant one.20International Journal of Food Science and Technology. Product appropriateness, willingness to try and perceived risks of foods containing insect protein powder: A survey of U.S. consumers
There’s a wrinkle, though. In a study where participants were surveyed before and after tasting cricket protein powder, attitudes shifted noticeably. Before trying it, most thought insect consumption was undesirable despite acknowledging that insects were a sustainable protein source. After actually tasting it, participants expressed willingness to buy cricket powder and recommend it to friends.21PubMed. Consumer attitudes toward entomophagy before and after evaluating cricket (Acheta domesticus)-based protein powders The gap between perception and experience suggests that the main obstacle is psychological rather than sensory. Cricket powder doesn’t taste bad; it just sounds bad. The flavor is often described as mildly nutty and earthy, and in a chocolate protein shake or baked into a bar, most people can’t distinguish it from other protein sources.
For the insect protein industry, this points to a clear strategy: normalization through incorporation. Selling people on “bug protein” head-on runs straight into a wall of evolutionary disgust responses. Selling them a high-protein pasta that happens to include cricket flour sidesteps most of that resistance. Whether the industry manages to thread that needle at scale will determine whether insect protein remains a niche curiosity or becomes a routine part of the protein supplement aisle.