Insect farming for protein is growing rapidly as a sustainable food system solution, but raises important welfare questions given growing evidence of insect nociception and potentially sentience.
Insect farming welfare exists in genuine scientific uncertainty, but the scale of production makes even low-probability sentience morally significant. If 1% of farmed insects have morally relevant suffering capacity, and trillions are farmed annually, the expected suffering could be enormous. The precautionary principle suggests investigating and minimizing unnecessary stressors even without certainty. Common welfare stressors include overcrowding, inadequate temperature/humidity, stressful slaughter methods, and nutritional deficiencies. The most humane slaughter methods likely involve rapid chilling followed by freezing rather than boiling alive. Research organizations like Rethink Priorities are actively investigating insect welfare to provide better evidence for these decisions.