HTR1A and Anxiety: We, thus, name this undesirable interaction between nNOS and 5‐HT1A receptor as “nNOS‐5‐HT1A receptor loop” (stress‐glucocorticoids‐nNOS‐Nitric oxides‐ONOO•‐5‐HT1A receptor ‐nNOS), which functions importantly in the pathology of stress‐associated anxiety behavior (Figure 5).