Insect farming is growing rapidly as a sustainable protein source, but the welfare of farmed insects remains scientifically contested. Understanding what we know and don't know matters for ethical food choices.
Insect farming presents a genuine ethical and scientific puzzle. The environmental case for replacing some conventional meat with insect protein is strong. The welfare case is deeply uncertain. We do not know with confidence whether insects have subjective experiences of suffering - their nervous systems are simpler than vertebrates, but the relationship between neural complexity and conscious experience is not fully understood. Given this uncertainty, the precautionary principle suggests that welfare considerations should be incorporated into insect farming development: avoiding practices likely to cause suffering if insects do have relevant experiences, and investing in research to better understand insect sentience. The scale of insect farming means that even a small probability of meaningful insect suffering would have enormous aggregate moral weight.