Immune Genes Modulate Altruism

A controlled RNA study found that ants that rescue trapped nestmates show higher expression of certain immune and olfactory genes in brain regions tied to memory, while 'non‑helpers' do not. This suggests immune signaling pathways can influence social decision‑making in animals, not just fight infections. — If immune pathways help shape cooperative behavior in animals, that reframes how we interpret biological findings about prosociality and cautions against simplistic genetic explanations when discussing human social behavior or policy.