What current science says about insect sentience and pain experience, and how this emerging evidence should inform our treatment of insects in agriculture, research, and daily life.
The welfare status of insects presents a profound philosophical and practical challenge. The scientific evidence for basic nociceptive responses in insects is relatively strong, but whether these constitute genuinely experienced pain — with subjective character — remains deeply uncertain. The precautionary principle, applied to the scale of insects in agriculture and research, argues for taking welfare considerations seriously even under uncertainty. Trillions of insects are farmed annually for food and feed; if each individual has even minimal capacity for suffering, the aggregate welfare implications are enormous. This uncertainty calls for research investment, precautionary welfare measures in insect farming, and continued philosophical attention rather than either confident dismissal or confident assertion.