When the nipples are stimulated, the body's nervous system sends signals to the brain, prompting the release of oxytocin from the pituitary gland. Oxytocin, commonly known as the "love hormone," is involved in childbirth, breastfeeding, and emotional bonding. Elevated levels of oxytocin can lead to uterine contractions, which is why nipple stimulation is sometimes used to help induce labor.
