Watch this 2-Minute Neuroscience video to learn more about oxytocin.

hormone produced by the hypothalamus that plays important roles in childbirth and lactation. Oxytocin also is suspected to be important in social bonding, trust, and compassion, but the specifics of its social functions are not well understood.

Further reading: Know your brain: Hypothalamus

                             Ecstasy and oxytocin