Insect farming is expanding as a sustainable protein source, raising novel welfare questions about the sentience and suffering of billions of farmed invertebrates.
The question of whether farmed insects suffer is genuinely uncertain but not negligible — insects possess nociceptors, show protective responses to noxious stimuli, and some demonstrate learned avoidance. With billions of individual insects in farming systems, even a small probability of meaningful suffering creates a significant expected welfare impact. Temperature extremes used in processing insects — freezing or roasting — may cause suffering if insects are sentient. Research into insect welfare is urgently needed to inform industry practices.