The hormone oxytocin, which is made in a part of the brain called the hypothalamus, plays a part in prompting childbirth, helps women nurse, and assists the human ability to form social relationships. It also encourages the bond between mothers and children and the bond between couples. A 2011 study said that oxytocin makes people act more courageous.
Prior research has also shown that oxytocin plays a role in developing trust, but experts had not, until now, discovered that it helps preserve monogamous relationships among humans.
During the new trial, Ren
