Thank you. Very interesting.
I consulted ChatGPT re vasopressin vs oxytocin & the oxytocin of men vs women in committed relationships & they said :
- Oxytocin vs vasopressin: the basics
Oxytocin: Often called the “bonding hormone.” It’s involved in pair bonding, trust, social recognition, stress reduction, and sexual arousal. Both men and women produce it.
Vasopressin: Chemically very similar to oxytocin. In men, it’s associated with sexual motivation, territorial behavior, and pair bonding. It tends to act more strongly on behaviors related to mate guarding and pursuit.
- Hormone release around orgasm
Men:
Vasopressin spikes before and during orgasm. This is linked to sexual motivation and goal-directed behavior.
Oxytocin does increase at orgasm, but the levels are lower and dissipate faster than in women. This is why the immediate “bonding” effect might be weaker in casual sex.
Women:
Oxytocin rises during sexual arousal and peaks at orgasm, contributing to bonding and emotional closeness.
Vasopressin plays a smaller role in women’s sexual behavior.
on average, men still tend to release less oxytocin than women after sex, even in committed relationships, but the difference narrows compared to casual encounters. Here’s why:
- Baseline sex differences
Women have higher baseline oxytocin activity and their oxytocin surge during orgasm is typically larger and longer-lasting than men’s.
Men’s oxytocin does rise at orgasm, but the peak is usually lower and dissipates faster, even in committed relationships.
- Context matters
In committed relationships, men’s oxytocin release increases relative to casual sex, especially if there’s emotional intimacy, cuddling, or affectionate touch before/after sex.
Studies measuring plasma oxytocin after sexual activity show that men in stable partnerships can have oxytocin spikes approaching those of women, but women still generally peak higher.
Of course CharGPT can get stuff wrong so I need to fact check, but that sounds likely to be at least somewhat accurate.