Insect farming is the fastest-growing sector of food animal production, involving potentially trillions of individuals annually, making welfare considerations urgent despite significant scientific uncertainty.
Insect welfare sits at the most uncertain frontier of welfare science. The question of whether insects have subjective experiences remains genuinely unresolved — the neural architecture is radically different from vertebrates and consciousness may not be present. However, the scale of insect farming is so enormous that even a small probability of morally relevant experience multiplies into enormous potential welfare concern. The most responsible approach is to apply the precautionary principle: develop welfare standards that address the clearest potential welfare concerns (thermal stress, crowding, slaughter methods) while supporting research to resolve the scientific uncertainty.