Oxytocin is a nine-amino acid neuropeptide hormone produced by magnocellular neurons in the paraventricular nucleus (PVN) and supraoptic nucleus (SON) of the hypothalamus, and released by the posterior pituitary gland. It is best known for its roles in parturition (labor induction) and lactation, but research over the past two decades has revealed a much broader role as a master regulator of social behavior, stress response, and gut function. Oxytocin is often called the "bonding hormone" or "love hormone" because it is released during physical touch, social connection, and sexual activity, and it promotes trust, empathy, and prosocial behavior. It also has significant anti-anxiety effects, modulates the HPA stress axis, enhances sexual function, and has demonstrated gut-healing properties in animal models. Intranasal administration allows it to cross the blood-brain barrier and directly modulate CNS oxytocin receptor signaling.
* Benefits based on preclinical/animal research unless otherwise noted.
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