Oxytocin: A hormone and neurotransmitter that plays a role in social bonding, sexual reproduction, and childbirth
In contrast, vasopressin was increased during arousal but returned to baseline during ejaculation. The study concludes that vasopressin is secreted during arousal, while oxytocin is secreted after ejaculation. A far more recent study of men found an increase in plasma oxytocin immediately after orgasm, but only in some of these sample that didn’t reach statistical…