Farmed Insect Welfare and Scale Implications

As insect farming grows rapidly as a sustainable protein source, questions about whether insects can suffer and what welfare standards should apply have become increasingly urgent and practically important.

Key Facts

Global insect production for food and feed is projected to reach millions of tonnes annually by 2030
Black soldier fly, mealworm, and cricket are the most commonly farmed insect species
Insects have simple nervous systems with significantly fewer neurons than vertebrates
Nociceptors have been identified in some insect species, raising questions about pain capacity
The UK does not currently regulate insect welfare, though this may change with further evidence
Insect farming often involves high-density housing, temperature manipulation, and mass killing methods
Even if individual insect probability of sentience is very low, the enormous numbers farmed create aggregate uncertainty

Welfare Considerations

Farmed insect welfare presents the most extreme version of the welfare under uncertainty problem: the probability of individual insect sentience appears low given current neurological evidence, yet the numbers involved are so enormous that even small probabilities generate large expected welfare effects. A billion insects with a 1% probability of meaningful pain experience more expected suffering than 10 million animals with a 100% probability. The responsible approach to insect farming welfare is to support research that reduces this uncertainty while implementing precautionary welfare improvements where they are low-cost and feasible. Humane killing methods and minimum stocking density standards are achievable precautionary measures.

What You Can Do

Support research into insect sentience and pain capacity to reduce welfare uncertainty
Advocate for precautionary welfare standards in insect farming regulations as the industry scales
Choose insect protein products from producers that have considered and addressed welfare in their methods
Engage with the emerging insect welfare science through organizations like the Insect Welfare Research Society
Apply the same moral curiosity to insect welfare uncertainty that we now apply to fish and crustaceans