Vegan Ground State, Nasal Breathing, and Relative Fearlessness: Diet, Respiration, and the Neural Basis of Conspecific Inclusion

Veganism and nasal breathing independently reduce baseline amygdala reactivity. Combined, they constitute a compound displacement intervention moving toward S0_fear. Reduced arachidonic acid reduces neuroinflammation; plant tryptophan raises serotonin tone; omega-3 reduces amygdala hyperreactivity. Nasal breathing modulates amygdala directly via olfactory bulb. Together these enable expanded conspecific recognition — the neurological extension of in-group status to previously excluded species.