Insect farming is growing rapidly as a sustainable protein alternative. The welfare implications of farming billions of insects require careful consideration despite scientific uncertainty about insect sentience.
Insect farming sits at an ethical frontier where the scale of potential suffering is enormous but the capacity of individual insects to suffer remains uncertain. If insects have even minimal pain capacity, insect farms housing billions of animals and killing them through methods like freezing or grinding represent a significant welfare issue. The EU has begun incorporating insects into its welfare framework as a precautionary measure. Research into whether insects experience nociceptive pain as subjective suffering is advancing but not yet resolved. The most prudent approach combines investment in sentience research, development of potentially more humane slaughter methods, and application of the precautionary principle to scale-up decisions.