Insect farming is growing rapidly as a sustainable protein source. The welfare implications depend critically on unresolved scientific questions about insect sentience and pain capacity.
Insect farming presents a genuinely novel ethical challenge. Unlike vertebrate farming, where sentience is well-established, insect welfare requires engaging with deep uncertainty about the nature of their experience. The precautionary argument is compelling: if there is meaningful probability that insects experience something like pain or suffering, the scale of insect farming means the potential welfare implications are enormous. Current best practice in higher-welfare insect facilities includes temperature-based stunning before harvest, appropriate substrate and environmental conditions, and avoidance of practices known to cause physiological stress responses. The science is developing — welfare standards will need to evolve as understanding improves.