As insect farming scales up for food, feed, and waste processing, welfare questions about the billions of insects produced annually are gaining scientific and ethical attention.
Insect farming welfare represents one of the most contested frontiers in animal ethics. The evidence for insect sentience is weaker than for vertebrates, and the economic and sustainability case for insect protein is strong. However, the scale involved — billions of individuals per farm — means that even a small probability of morally significant suffering creates aggregate welfare concerns that deserve serious attention. The precautionary principle suggests investing in research to understand insect nociception and developing slaughter methods that minimise potential suffering, regardless of the current certainty about insect experience. Scientific institutions including the London School of Hygiene and Tropical Medicine are beginning to engage with insect welfare as a genuine research question.