Insect farming for protein has grown rapidly as a sustainable alternative to conventional livestock, but the welfare of the billions of insects farmed annually is a genuinely open question that deserves serious attention as the industry scales.
Insect farming presents one of the most philosophically challenging questions in contemporary animal welfare: at what probability of sentience does moral consideration become obligatory? The honest answer from current science is that we genuinely do not know whether farmed insects experience anything analogous to suffering. Insects have nociceptors and show avoidance behaviour, but whether this involves subjective experience of pain is unknown. The scale of insect production — trillions of individuals annually — means that if insects are sentient even at a fraction of vertebrate intensity, the welfare stakes are enormous. A precautionary approach suggests investing in research into insect welfare indicators, slaughter method improvement, and housing standards, while acknowledging that the evidence base for current recommendations is thin. This is an area where investment in research has particularly high expected welfare value.