Insect farming is growing rapidly as a sustainable protein source. The welfare of farmed insects is an emerging question with genuine scientific and ethical uncertainty.
Farmed insect welfare sits at the frontier of welfare science, where genuine uncertainty about insect sentience meets the enormous scale of farming that produces hundreds of billions of individuals. The scientific question is genuinely unresolved — insect nervous systems lack the structures associated with pain experience in vertebrates, but some research suggests nociceptive responses and learned avoidance. The scale of insect farming means that even a small probability of welfare-relevant experience, multiplied by hundreds of billions of individuals, represents a potentially significant moral consideration under precautionary reasoning. The environmental sustainability case for insect protein is strong. Developing welfare frameworks that can be refined as evidence accumulates, and applying precautionary principle reasoning where uncertainty exists, represents the most defensible approach.