Insect Welfare in Cricket and Mealworm Farming

Insects are increasingly farmed as a sustainable protein source. The welfare implications depend on whether insects are sentient and what farming conditions they experience.

Key Facts

Global insect farming produces approximately 1 million tonnes of protein annually and is growing at 20% per year
Common farmed species include black soldier flies, mealworms, crickets, and superworms
The evidence for insect sentience is mixed — nociception is documented but subjective pain is uncertain
Stocking densities in insect farms can reach millions of animals per square metre
Killing methods include freezing, grinding alive, and CO2 exposure — the welfare implications of each are debated
The EU Novel Foods Regulation permits insect farming for human consumption — welfare standards are minimal

Welfare Considerations

Insect welfare is one of the most contested areas in welfare science. The precautionary case for welfare consideration is stronger than previously thought — insects show nociception, learning, and some evidence of motivational trade-offs that suggest some form of experience. But the uncertainty is genuinely high, and the welfare of billions of insects in poorly regulated farms may be a very large moral consideration if insects do have morally significant experiences, or a negligible one if they do not. The welfare research community is actively working on this question. In the meantime, the most defensible position is to apply welfare considerations proportional to plausible sentience and advocate for research that reduces this uncertainty.

What You Can Do

Support research into insect sentience and nociception at institutions studying invertebrate neuroscience
Advocate for welfare standards in insect farming that address killing methods and environmental conditions
Engage with food companies using insect protein about their welfare standards and research commitments
Follow the work of welfare scientists including the Insect Welfare Research Society
Apply the precautionary principle: prefer insect products from operators who take welfare seriously