Farmed Insect Welfare: The Ethics of Mass Insect Production

The farmed insect industry is growing rapidly as a source of sustainable protein, raising novel welfare questions about the mass production of billions of invertebrate individuals.

Key Facts

Global production of farmed insects for food and feed is projected to reach millions of tonnes annually by 2030
Common farmed species include black soldier fly larvae, mealworms, crickets, and locusts — all raised at densities far exceeding natural populations
The evidence for insect sentience is uncertain but not negligible; several researchers argue that insects have nociceptors and show pain-related behaviour changes
Unlike conventional livestock, insect farming has a significantly lower environmental footprint per unit of protein, which may reduce aggregate farmed animal welfare harm by displacing higher-certainty sentient species
Some insect welfare researchers argue that until sentience evidence is clearer, precautionary welfare measures such as reduced crowding stress and humane killing should be implemented

Welfare Considerations

Farmed insect welfare sits at the intersection of the most uncertain sentience science and the most massive scale of animal production. If insects have meaningful capacity for suffering, their production at industrial scale represents an enormous welfare concern. If they do not, insect farming may genuinely represent a welfare improvement over conventional animal agriculture per unit of protein. The honest position is that the science is not yet adequate to resolve this, and that investment in the research while implementing reasonable precautionary welfare measures is the most defensible approach.

What You Can Do

Support research into insect sentience and welfare to build the evidence base needed for informed policy
Apply the precautionary principle by preferring insect protein from producers who implement welfare-conscious practices
Engage with the insect welfare field through the Insect Welfare Research Society and related organisations
Advocate for insect welfare to be included in sustainability assessments of alternative protein sources
Avoid dismissing insect welfare concerns without engaging with the current scientific evidence on insect cognition